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TZID:Europe/Paris
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DTSTART:20250330T010000
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DTSTART:20251026T010000
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DTSTART:20260329T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260323T140000
DTEND;TZID=Europe/Paris:20260323T150000
DTSTAMP:20260425T130929
CREATED:20260306T161739Z
LAST-MODIFIED:20260306T162442Z
UID:10000098-1774274400-1774278000@sfp-alpes.fr
SUMMARY:Stéphanie ROCCIA (LPSC-CNRS/UGA\, GRENOBLE)
DESCRIPTION:The search for neutron electric dipole moment at PSI\nRésumé : \nThe Universe and its history are simultaneously very well understood and still a big mystery. We have amazing tools from satellites to\nobservatories to weight the universe over its history. But the components of the Universe can simply not yet be explained by physicists. To get the full picture\, we need to identify and understand the interactions at play throughout the life of the Universe. This is the meeting point between particle physics and cosmology. At this meeting point stands the neutron\, a common particle that we can uniquely use in high precision experiments.\nI will present how experiments searching for a permanent electric dipole moment of the neutron (nEDM) aim at discovering new sources of CP violation beyond the Standard Model of particle physics and understanding the origin of the matter-antimatter asymmetry of the Universe. The quest for the neutron electric dipole moment started more than sixty years ago. In recent experiments\, polarized ultra-cold neutrons are stored in material bottles.\nI will present the ongoing efforts at the Paul Scherrer Institute in Switzerland where the n2EDM spectrometer has taken the first “physics data” in 2025. A large fraction of this dataset is dedicated to measurements of the UCN spectrum. I will present the newest UCN spectroscopy techniques that were recently published and the reasons for the importance of a deep understanding of the UCN spectrum. \n— \nHanno Filter (College 3 Secretary) \nExternal visitors may ask for a site access to tellier(at)ill.fr \nZoom link : https://ill.zoom.us/j/98964195699?pwd=vPhNT17CAeoDUr7QX4PjfyPnWsHuMU.1 – Password : SeminarC3
URL:https://sfp-alpes.fr/event/stephanie-roccia-lpsc-cnrs-uga-grenoble-2/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260327T110000
DTEND;TZID=Europe/Paris:20260327T120000
DTSTAMP:20260425T130929
CREATED:20260320T095205Z
LAST-MODIFIED:20260320T095209Z
UID:10000102-1774609200-1774612800@sfp-alpes.fr
SUMMARY:Jacopo DE NARDIS (Cergy Paris University)
DESCRIPTION:Anticoncentration of Wave Functions and Information-Protected Phases in Noisy Quantum Chaotic Systems\nRésumé : \nI will present recent results on noisy quantum chaotic dynamics\, with a particular focus on wave-function anticoncentration—characterized\, for instance\, through bitstrings output distributions—and on Information-protected phases that persist at finite circuit depth. \nContact : serge.florens@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/jacopo-de-nardis-cergy-paris-university/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260330T140000
DTEND;TZID=Europe/Paris:20260330T150000
DTSTAMP:20260425T130929
CREATED:20260312T152112Z
LAST-MODIFIED:20260312T152502Z
UID:10000099-1774879200-1774882800@sfp-alpes.fr
SUMMARY:Sander VAN SMAALEN (Laboratory of Crystallography\, Bayerisches Geoinstitut\, University of Bayreuth)
DESCRIPTION:Chiral charge density waves in EuAl4 and related compounds\nRésumé : \nThe BaAl 4 structure type has centrosymmetric\, tetragonal symmetry\, I4/mmm\, with three crystallographically independent atom sites: Ba\, Al1 and Al2. Solid solution series RAl 4-x Gax (R= Eu\, Sr\, Ca\, Ba; 0 < x < 4) crystallize in this structure type [1]\, where Ga preferably occupies the Al2 site. Accordingly\, complete chemical order is found for x = 0\, 2\, 4. Incommensurate charge-density waves (CDWs) have been observed in several of these ordered compounds. For the other values of x\, lack of chemical order leads to suppression of the CDW transition. At much lower temperatures (T = 10–30 K) magnetic order appears for the compounds with magnetic Eu atoms. Here\, we present the crystal structures of the incommensurate CDWs of EuAl 4 \, EuAl 2 Ga2 and SrAl 4 . In particular\, the symmetry of the CDWs is analyzed in view of x-ray diffraction data (present data [2–5])\, and results of transmission electron microscopy (TEM)\, density functional theory (DFT) calculations and inelastic x ray scattering (IXS) from the literature [6–8].\nReferences : \n[1] M. Stavinoha et al.\, Phys. Rev. B 97\, 195146 (2018). Charge density wave behavior and order-disorder in the antiferromagnetic metallic series Eu(Ga1-x Al x )4 .\n[2] S. Ramakrishnan et al.\, IUCrJ 9\, 378–385 (2022). Orthorhombic charge density wave on the tetragonal lattice of EuAl 4 .\n[3] S. R. Kotla et al.\, Phys. Rev. B 112\, 064113 (2025). Broken inversion symmetry in the charge density wave phase in EuAl 4 .\n[4] S. Ramakrishnan et al.\, Phys. Rev. Research 6\, 023277 (2024). Non-centrosymmetric\, transverse structural modulation in SrAl 4 \, and elucidation of its origin in the BaAl 4 family of\ncompounds.\n[5] H. Agarwal et al.\, Phys. Rev. B 111\, 155144 (2025). I-centered versus F-centered orthorhombic symmetry and negative thermal expansion of the charge density wave of EuAl2 Ga2 .\n[6] H. Ni et al.\, Phys. Rev. Mater. 8\, 104414 (2024). Real-space visualization of atomic displacements in a long-wavelength charge density wave using cryogenic 4D-STEM.\n[7] A. N. Korshunov et al.\, Phys. Rev. B 110\, 045102 (2024). Phonon softening and atomic modulations in EuAl 4 .\n[8] F. Z. Yang et al.\, Nature Commun. 16\, 10401 (2025). Incommensurate Transverse Peierls Transition and Signature of Chiral Charge Density Wave in EuAl4 \nContact : andrew.fefferman@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/sander-van-smaalen-laboratory-of-crystallography-bayerisches-geoinstitut-university-of-bayreuth/
LOCATION:CNRS – Salle Louis Weil (E424)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260331T140000
DTEND;TZID=Europe/Paris:20260331T150000
DTSTAMP:20260425T130929
CREATED:20260227T152048Z
LAST-MODIFIED:20260227T152234Z
UID:10000088-1774965600-1774969200@sfp-alpes.fr
SUMMARY:Simon PONTON (chargé de recherche CNRS - SIMaP)
DESCRIPTION:Development of the combinatorial approach for the CVD thin film deposition process : Multiphysics coupling and machine learning\nRésumé : \nThe combinatorial approach applied to chemical vapor deposition processes integrating high-throughput experiments\, computational simulations\, and machine learning seems to emerge as a transformative paradigm to accelerate the discovery of novel materials. Through systematic gradient explorations\, large-scale datasets can be generated to deepen our understanding of process-structure-property relationships. Machine learning models\, trained on experimental and simulated data enable rapid prediction and identification of high-potential solutions\, thereby guiding future experiments and simulations. The synergy not only reduces the time or cost associated with material discovery but also unlocks access to previously unexplored regions of the materials space. \nShort Bio/CVMy academic journey began in Grenoble\, where I studied chemistry before developing a keen interest in materials sciences\, particularly nanostructures and their processing. Driven by a desire to unravel the underlying mechanisms\, I started my PhD in Toulouse\, between the CIRIMAT and LGC. There\, I expanded my expertise in chemical engineering and Multiphysics simulation. After nearly two years of postdoctoral research\, I sought to broaden my research perspective and joined Polytechnique Montréal in the chemical engineering section for two postdoctoral positions that led to an associate professor role. However\, my longing for French cheese proved irresistible\, I successfully secured a position at CNRS and joined SIMaP in February 2026. \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/simon-ponton-charge-de-recherche-cnrs-simap/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260401T140000
DTEND;TZID=Europe/Paris:20260401T160000
DTSTAMP:20260425T130929
CREATED:20260227T150400Z
LAST-MODIFIED:20260227T151333Z
UID:10000087-1775052000-1775059200@sfp-alpes.fr
SUMMARY:Soutenance de Thèse de Simon VERNIER
DESCRIPTION:Optimisation et caractérisation avancée de couches minces de zircone stabilisée à l’yttrine par dépôt chimique d’organométalliques en phase vapeur pour des cellules électrochimiques à oxydes solides\nRésumé : \nNotre consommation énergétique et l’électrification de notre production afin de la décarboner. Le développement des énergies solaire et éolienne est cependant freiné par leur défaut principal : leur intermittence. Le stockage saisonnier de l’énergie sous forme d’hydrogène est une solution prometteuse pour pallier à ce défaut. EPISTORE est un projet de recherche européen visant au développement d’une cellule électrochimique à oxydes solides (SOC)\, réversible\, en couche mince\, basse température (< 500°C). Ces dispositifs sont en effet particulièrement pertinents pour la conversion électricité-gaz. \nCette thèse\, dans le cadre d’EPISTORE\, projet du programme de recherche et d’innovation Horizon 2020\, vise au développement de couches minces de zircone stabilisée à l’yttrine (YSZ) pour servir d’électrolyte pour ces SOCs. Le YSZ\, contenant 8 mol% d’yttrine (8YSZ) est un matériau déjà largement utilisé comme électrolyte dans les dispositifs électrochimiques en céramique. Ses propriétés lui permettent de conduire efficacement les ions oxygènes tout en formant une barrière électronique. L’étude des couches minces de YSZ fabriquées au cours de cette thèse doit permettre d’évaluer la pertinence de réduire la quantité d’yttrine dans le matériau. En effet\, les travaux publiés sur le sujet suggèrent qu’une concentration de 3 mol% ou 4 mol% d’yttrine pourraient améliorer les propriétés mécaniques\, vitales pour des dispositifs en couches minces. \nCe travail détaille l’optimisation de la synthèse de ces films par dépôt chimique en phase vapeurs d’organométalliques (MOCVD) puis la caractérisation avancée de ces échantillons\, non seulement structurellement et morphologiquement (XRD\, TEM\, SEM\, Raman…) mais aussi de leurs propriétés électriques via de la spectroscopie d’impédance électrochimique (EIS) ou mécaniques via nanoindentation et tests de déformation. Une nouvelle technique d’observation directe de la diffusion ionique impliquant des traceurs isotopiques et de la spectroscopie Raman a aussi été adaptée à ce matériau pour la première fois. \nLes résultats obtenus suggèrent que l’emploi de 3YSZ et 4YSZ à basse température (< 500 °C) permettent d’obtenir des performances électrochimiques équivalentes ou supérieures au 8YSZ. Un effet positif de ce changement de concentration sur les propriétés mécaniques des films n’a cependant pas été démontré. \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/soutenance-de-these-de-simon-vernier/
LOCATION:Phelma minatec\, Salle Z108\, Grenoble INP - Phelma\, 3 parvis Louis Néel\, Grenoble\, 38000\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260407T110000
DTEND;TZID=Europe/Paris:20260407T120000
DTSTAMP:20260425T130929
CREATED:20260320T150306Z
LAST-MODIFIED:20260320T150310Z
UID:10000105-1775559600-1775563200@sfp-alpes.fr
SUMMARY:Rajeesh KUMAR N  (Research Associate\, Experimental Physics IV – Solid State Physics\, Ruhr-Universität Bochum\, Germany)
DESCRIPTION:Magnetism and spin dynamics of a weakly interacting rare-earth stretched diamond lattice\nRésumé : \nIn condensed matter physics\, a quantum-disordered ground state is characterized by the absence of long-range order down to absolute zero temperature\, where the disorder is driven by quantum fluctuations that persist even at T=0. On the other hand\, the magnetism of rare-earth materials is particularly intriguing as it originates from their localized 4f electrons\, which exhibit strong spin–orbit coupling\, pronounced magnetic anisotropy\, and relatively weak exchange interactions between magnetic ions. These unique characteristics\, when combined with suitable lattice geometry\, can give rise to a wide variety of unconventional magnetic ground states. \nA diamond magnetic lattice is a bipartite network and in its ideal form\, does not exhibit geometric frustration. However\, “stretched” diamond lattices have recently gained attention where frustration can emerge due to competition between nearest-neighbor (J1) and next-nearest-neighbor (J2) exchange interactions\, despite preserving the bipartite nature. In this context\, we investigate the magnetic ground state of the rare-earth molybdate compound Na5Yb(MoO4)4\, which crystallizes in a stretched diamond magnetic lattice. This compound can be viewed as a complex derivative of the conventional scheelite- type ABO4 structure\, crystallizing in the tetragonal space group I41/a. The magnetic lattice in Na5Yb(MoO4)4 is highly unusual\, featuring a remarkably large nearest-neighbor Yb–Yb separation of approximately 6.3 Å\, in contrast to previously studied stretched-diamond systems where the J1 distance typically lies in the range of 3–5 Å and is predominantly governed by superexchange interactions. Furthermore\, the next-nearest-neighbor (J2) Yb–Yb distance exceeds 9 Å\, significantly weakening the J2 exchange interactions. As a result\, magnetic frustration arising from competing J1–J2 exchange is significantly suppressed in Na5Yb(MoO4)4\, distinguishing it from other frustrated diamond-lattice systems. \nWe employ neutron and synchrotron X-ray diffraction to elucidate the structural details of Na5Yb(MoO4)4. The magnetic properties and ground state are investigated using bulk magnetic susceptibility measurements\, specific heat studies\, and muon spin relaxation (μSR) experiments. In addition\, density functional theory calculations within the DFT+U framework are used to provide theoretical support for the experimental findings. Our results establish Na5Yb(MoO4)4 as a rare example of a dipolar quantum paramagnet in which single-ion physics and long-range dipolar interactions dominate\, while exchange interactions are suppressed to the millikelvin energy scale. \nReference \n1. N. D. Kelly et al.\, Physical Review Materials 6\, 044410 (2022).\n2. A. Chauhan et al.\, Physical Review B 108\, 134424 (2023).\n3. J. Kumar et al.\, Physical Review B 111\, 014411 (2025).\n4. T. Arh et al.\, Nat. Mater. 21\, 416 (2022). \n  \nCollege 5B Secretary \nAlberto Rodriguez Velamazan \nExternal visitors may ask for a site access to Brigitte Dubouloz (dubouloz@ill.fr)
URL:https://sfp-alpes.fr/event/rajeesh-kumar-n-research-associate-experimental-physics-iv-solid-state-physics-ruhr-universitat-bochum-germany/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260408T093000
DTEND;TZID=Europe/Paris:20260408T113000
DTSTAMP:20260425T130929
CREATED:20260402T160829Z
LAST-MODIFIED:20260402T160835Z
UID:10000120-1775640600-1775647800@sfp-alpes.fr
SUMMARY:Soutenance d'HDR de Marie-Aude MEASSON (Institut Néel\, équipe MagSup)
DESCRIPTION:Matériaux Quantiques en Conditions Extrêmes : Modes Collectifs et Ordres Quantiques Exotiques\nRésumé : A VENIR… \nPrésentation en français \n_ \nContact : marie-aude.measson@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/soutenance-dhdr-de-marie-aude-measson-institut-neel-equipe-magsup/
LOCATION:CNRS – Bâtiment A\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38054\, France
CATEGORIES:Soutenance,Soutenance HDR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260408T140000
DTEND;TZID=Europe/Paris:20260408T150000
DTSTAMP:20260425T130929
CREATED:20260320T150834Z
LAST-MODIFIED:20260320T151400Z
UID:10000106-1775656800-1775660400@sfp-alpes.fr
SUMMARY:Javier CAMPO (Aragón Nanoscience and Materials Institute (CSIC - Universidad de Zaragoza)  Zaragoza\, Spain)
DESCRIPTION:A new magnetic state\, “B-Phase”\, found in MnSi at Low Temperatures \nRésumé : \nIn cubic chiral magnets\, Dzyaloshinskii-Moriya (DM) interactions within the chiral crystal structure result in diverse magnetic textures\, including skyrmion lattices (SkL) and chiral soliton lattices\, which hold promise for spintronic and magnonic devices. Among these\, MnSi has been extensively studied due to the SkL formation in the so-called “A-phase” just below Tc [1].  Recently\, it was suggested theoretically that at low temperatures (T)\, the conical helimagnetic (CH) and forced-ferromagnetic (FFM) phases in MnSi might not be directly connected but separated by another SkL phase\, possibly metastable\, or a new phase of unknown nature near the critical magnetic field (Bc) [2]. The theoretical prediction of the new SkL phase at low T is in good agreement with the experiments reported in MnSi and Cu2OSeO3 [3\,4]. On the other hand\, by using careful ac susceptibility measurements at low temperature\, we determined the magnetic phase diagrams of oriented crystals of MnSi [5]. A new unexpected region\, termed “B-phase”\, was observed when the magnetic field was applied along the main diagonal <111>. \nTo clarify the nature of the “B-phase”\, we performed small-angle neutron scattering (SANS) measurements at TAIKAN in J-PARC and transverse field (TF)-μSR experiments at TRIUMF. At low temperatures and fields near Bc\, SANS patterns revealed two peaks along the horizontal axis\, corresponding to the magnetic Bragg peaks of the CH state. Notably\, no diffraction peaks indicative of a six-fold-symmetric SkL were observed. Meanwhile\, μSR results showed a distinct internal magnetic field distribution in the “B-phase”\, different from those in the CH or FFM phases\, suggesting that the “B-phase” could involve a reorientation of Mn helices within the unit cell. \nIn the presentation\, we will discuss these SANS and μSR findings in detail and their implications for understanding the spin texture in the “B-phase”. \nReferences \n\nS. Mühlbauer et al.\, Science 323\, 915 (2009).\nV. Laliena and J. Campo\, Phys. Rev. B 96\, 134420 (2017).\nT. Nakajima et al.\, Sci. Adv. 3\, e1602562 (2017).\nA. Chacon et al.\, Nature Phys 14\, 936–941 (2018).\nM. Ohkuma et al.\, APL Mater. 10\, 041104 (2022).\n\n  \nCollege 5B Secretary \nAlberto Rodriguez Velamazan \nExternal visitors may ask for a site access to Brigitte Dubouloz (dubouloz@ill.fr)
URL:https://sfp-alpes.fr/event/javier-campo-aragon-nanoscience-and-materials-institute-csic-universidad-de-zaragoza-zaragoza-spain/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260409T140000
DTEND;TZID=Europe/Paris:20260409T150000
DTSTAMP:20260425T130929
CREATED:20260320T151906Z
LAST-MODIFIED:20260320T151906Z
UID:10000107-1775743200-1775746800@sfp-alpes.fr
SUMMARY:Gonzalo PEREZ-BLASCO  (Aragón Nanoscience and Materials Institute (CSIC - Universidad de Zaragoza) - Physics Condensed Matter Dept. Zaragoza\, Spain)
DESCRIPTION:Empirical machine learning for 3He spin-filter polarisation decay\nRésumé : \nA lightweight\, empirical machine-learning framework is presented for predicting the time evolution of the nuclear polarisation of 3He spin-filter cells under realistic neutron beam line conditions. The method bridges the gap between detailed microscopic modelling of polarisation relaxation and purely heuristic correction schemes by combining supervised learning with basic physics-informed constraints on spin relaxation. This strategy ensures physically consistent polarisation forecasts while maintaining computational efficiency and ease of implementation. \nThe framework is tailored to the limited number of heterogeneous experimental datasets typically encountered during routine instrument operation. Rather than explicitly modelling all relaxation mechanisms\, it learns an effective representation of polarisation decay directly from experimental data. Within the domain spanned by the training dataset\, the model demonstrates stable predictive performance while preserving the expected exponential relaxation behaviour and accommodating non-linear\, history-dependent effects. \nThe resulting predictions enable reliable\, time-dependent corrections of neutron scattering data affected by polarisation efficiency drift. Compared with traditional single-parameter relaxation models\, the approach accounts for the combined influence of multiple experimental parameters and their temporal evolution. Although extrapolation beyond the training domain requires careful validation\, the method provides an operationally efficient and reproducible tool for polarisation monitoring and correction in realistic experimental environments. \n  \nCollege 6 Secretary \nGabriel Cuello \nExternal visitors may ask for a site access to Brigitte Dubouloz (dubouloz@ill.fr)
URL:https://sfp-alpes.fr/event/gonzalo-perez-blasco-aragon-nanoscience-and-materials-institute-csic-universidad-de-zaragoza-physics-condensed-matter-dept-zaragoza-spain/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260413T110000
DTEND;TZID=Europe/Paris:20260413T120000
DTSTAMP:20260425T130929
CREATED:20260409T105454Z
LAST-MODIFIED:20260409T105459Z
UID:10000123-1776078000-1776081600@sfp-alpes.fr
SUMMARY:Sophie MONNERY (Institut Jean le Rond d’Alembert\, Paris)
DESCRIPTION:Granular heap on an elastic membrane : statics and dynamics\nRésumé : \nWhen granular material is poured onto an elastic membrane\, it forms a heap whose weight deforms the membrane. The membrane’s deformation\, in turn\, constrains the heap’s geometry\, causing its aspect ratio to deviate from the classic triangular profile. This coupling is governed by a dimensionless number that captures the balance between the membrane’s elasticity and the granular weight in this simplified elasto-granular system. We introduce an incremental model to predict the heap’s temporal evolution\, accounting for its spreading and growth as mass is added. \nThen\, upon introducing energy into the system by vibrating the elastic support\, grains rearrangements reshape the heap’s apex\, giving rise to new configurations\, including a “volcano-like” profile that is more compact. At even higher vibrational amplitudes\, grains begin to detach from the bulk and to bounce on the membrane\, with spiraling trajectories. \n_ \nContact : philippe.marmottant@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/sophie-monnery-institut-jean-le-rond-dalembert-paris/
LOCATION:LiPhy – Salle de conférence\, LiPhy 140 avenue de la Physique\, St Martin d'Hères\, 38402\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260417T140000
DTEND;TZID=Europe/Paris:20260417T150000
DTSTAMP:20260425T130929
CREATED:20260326T143614Z
LAST-MODIFIED:20260326T143621Z
UID:10000112-1776434400-1776438000@sfp-alpes.fr
SUMMARY:Juan Bautista CARDA-CASTELLO (Inorganic and Organic Chemistry Department\, Universitat Jaume I\, Castellón (Spain))
DESCRIPTION:Scientific and Technological Innovations in the Ceramic Industry\nRésumé : \nThe conference “Scientific and Technological Innovations in the Ceramic Industry” will provide a concise overview of recent advances in ceramic materials\, processing technologies\, and new technological opportunities for the ceramic sector. It will examine the technological and economic relevance of the ceramic industry\, together with the key properties that make ceramic materials attractive for advanced uses. Particular attention will be paid to ceramic coating deposition techniques and high-temperature sintering processes\, as well as to processing routes such as laser zone melting or physical vapor deposition (PVD)\, whose application offers new possibilities for the ceramic industry. The lecture will also discuss application fields such as photovoltaics\, catalysis\, and other functional technologies\, which represent expanding areas of interest for the ceramic sector. Overall\, the presentation will show how innovation is broadening the industrial scope of ceramics beyond their traditional uses. \nShort Bio/CV \nJuan Bautista Carda Castelló is a Full Professor of Inorganic Chemistry\, Head of the Solid State Chemistry Research Group and Director of the “Ciutat de Vila-real” Chair of Ceramic Innovation at Universitat Jaume I in Castellón (Spain). With a highly distinguished academic\, scientific\, and institutional career\, he has developed an outstanding record in research\, teaching\, and technology transfer\, with more than 300 scientific publications\, numerous patents\, and extensive participation in national and international research projects. He has supervised more than 35 PhD theses\, promoted collaborations with universities and technological centers worldwide\, and received several major distinctions for his contribution to science and ceramic innovation. His career has made him a leading figure in the fields of solid-state chemistry and ceramic technology. \n— \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/juan-bautista-carda-castello-inorganic-and-organic-chemistry-department-universitat-jaume-i-castellon-spain/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260421T140000
DTEND;TZID=Europe/Paris:20260421T160000
DTSTAMP:20260425T130929
CREATED:20260402T154628Z
LAST-MODIFIED:20260402T154831Z
UID:10000118-1776780000-1776787200@sfp-alpes.fr
SUMMARY:Soutenance de Thèse de Eymeline PAGEOT (IRIG / IBS)
DESCRIPTION:Decoding chaos : a cryo-em walk through physarum polycephalum heterogeneous cell extracts\nRésumé : \n\nCryo-electron microscopy (cryo-EM) has become a central method in structural biology for determining high-resolution structures of macromolecular assemblies. However\, most cryo-EM studies still rely on highly purified samples\, which limits the range of biological systems that can be investigated. In recent years\, the analysis of cell extracts by single particle cryo-EM has emerged as an alternative strategy to explore the structural diversity of cellular proteins directly from complex mixtures. Despite its potential\, this approach remains technically challenging due to the high level of heterogeneity present in such samples and the difficulty of identifying proteins without complementary techniques such as mass spectrometry.\n\n​ The work presented in this thesis investigates the feasibility of using cryo-EM as a primary discovery tool to determine and identify protein structures directly from fractionated cell extracts. The study focuses on the plasmodial slime mould Physarum polycephalum\, a non-model eukaryotic organism whose structural proteome is largely unexplored. In contrast to most previous studies in the field\, protein identification relied solely on structural information derived from cryo-EM reconstructions.\n\nCell extracts from P. polycephalum were fractionated using biochemical separation methods and analysed by cryo-EM. Because such samples contain a wide range of proteins with different sizes\, shapes\, and abundances\, dedicated image processing strategies were developed to address the challenges posed by particle heterogeneity and flexibility. Particular attention was given to 2D classification\, particle sorting\, and iterative particle picking strategies to improve the recovery of multiple particle orientations and increase the number of particles contributing to 3D reconstructions.\n\nUsing these approaches\, fourteen macromolecular assemblies were identified and solved directly from the heterogeneous samples. In cases where the cryo-EM maps reached sufficient resolution\, atomic models could be built ab initio. For lower-resolution structures\, identification relied on structural comparison with known protein folds and structures predicted by generative tools. This work demonstrates that protein identity and putative function can be inferred directly from the structural information\, opening the possibility of structure-based genome annotation in poorly characterised organisms.\n\nBeyond the individual structures determined in this study\, this work also outlines the methodological challenges associated with large-scale structural exploration of complex biological mixtures. The largely manual nature of several steps in the workflow currently limits the throughput of the approach. Strategies to automate key stages of the pipeline\, including particle classification\, initial model generation\, and structural identification\, are therefore discussed as important directions for future development.​\n\nFinally\, this work highlights the importance of community-driven analysis and open data sharing for the continued development of large-scale structural exploration approaches. Making both the raw cryo-EM data and the solved structures publicly available enables other researchers to further investigate the dataset\, potentially identifying additional structures and improving the analysis using new computational methods\, as well as enabling the development of the methods themselves. In the longer term\, combining such « shotgun » cryo-EM approaches with advances in computational modelling and high-throughput data analysis may contribute to the systematic structural characterisation of cellular proteomes.\n\n​​–\n\n\n\nLes séminaires et soutenances sont ouverts à tous\, notez toutefois que l’accès au campus EPN nécessite un avis de rendez-vous. Merci de remplir ce formulaire  et de l’adresser\, plus de 48h à l’avance\, à ce contact. Pensez à vous munir d’une pièce d’identité le jour de votre visite.
URL:https://sfp-alpes.fr/event/soutenance-de-these-de-eymeline-pageot-irig-ibs/
LOCATION:IBS – Salle des séminaires\, IBS 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="IBS":MAILTO:ibs.seminaires@ibs
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260423T140000
DTEND;TZID=Europe/Paris:20260423T150000
DTSTAMP:20260425T130929
CREATED:20260403T081518Z
LAST-MODIFIED:20260403T081647Z
UID:10000122-1776952800-1776956400@sfp-alpes.fr
SUMMARY:Hermann SUDEROW (Universidad Autonoma de Madrid)
DESCRIPTION:Millikelvin scanning tunneling spectroscopy in heavy fermions\nRésumé : \nSince its invention over 40 years ago\, Scanning Tunneling Microscopy (STM) has provided an unprecedented window into matter at the atomic scale. By measuring tunneling conductance as a function of voltage with atomic precision\, modern millikelvin STM offers a direct method to characterize the ground state of quantum materials with high energy resolution. I will discuss recent millikelvin STM experiments in the heavy fermion unconventional superconductor UTe2. UTe2 has a unique phase diagram\, which is associated to equal spin pairing superconductivity and may potentially host topological modes at the surface. In this system we have identified a novel electron driven surface charge density wave (CDW)[1]. CDWs are often observed in dichalcogenides\, cuprates\, and pnictides\, and arise from features in the lattice that facilitate electronic charge ordering. CDWs are considered to compete with Kondo screening and are relatively rare in heavy fermion metals. I will discuss the exceptional case of UTe2 and show how we identified the primitive wavevectors of the CDW and established the relationship between the surface CDW and the heavy fermion bulk properties. I will also briefly present recent advances and future prospects for STM\, including novel routes to map the Josephson current at atomic scale [2]\, observation of surface superconductivity [3]\, STM in high vectorial magnetic fields [4] and Replica-STM [5]. \n[1] Surface charge density wave in UTe2\, P. García et al\, arXiv:2504.12505\n[2] The feedback driven atomic scale Josephson microscope\, S.D. Escribano et al\, Nat Com 16\, 5842 (2025).\n[3] Robust surface superconductivity and vortex lattice in the Weyl semimetal g-PtBi2\, J. Moreno et al\, Arxiv 2508.04867.\n[4] Scanning Tunneling Microscopy in high vectorial magnetic fields\, J. Rumeu et al\, Rev. Sci. Instrum. 97\, 033705 (2026).\n[5] Bridging atomic and mesoscopic length scales with Replica Scanning Tunneling Microscopy: Visualizing the intra-unit cell pair density modulation of superconducting FeSe at micron length scale\, M. Agueda\, Arxiv 2602.19678. \n_ \nContact : florence.levy-bertrand@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/hermann-suderow-universidad-autonoma-de-madrid/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260423T140000
DTEND;TZID=Europe/Paris:20260423T160000
DTSTAMP:20260425T130929
CREATED:20260402T155914Z
LAST-MODIFIED:20260402T155920Z
UID:10000119-1776952800-1776960000@sfp-alpes.fr
SUMMARY:Soutenance de Thèse de Moritz KIRCHNER (IRIG / IBS)
DESCRIPTION:Molecular bases of a multiprotein assembly linking membrane biology to stress adaptation in enterobacteria\nRésumé : \n\nEnteric bacteria encounter a variety of stress factors when infecting their host. This includes but is not limited to acid stress\, oxygen limitation and antibiotic stress. Bacteria counteract such stressors using various stress response systems. A central factor in the stress adaptation of enterobacteria is their cell envelope\, in particular their cell membrane. A system of proteins which has been demonstrated to be involved in multiple stress adaptation pathways is the RavA-ViaA-LdcI triad in Escherichia coli. RavA and ViaA are two proteins with as of yet unknown function that have been shown to sensitise E. coli to aminoglycoside antibiotics under anaerobic conditions. RavA forms a large complex with LdcI\, an inducible lysine decarboxylase which is one of the central enzymes involved in acid stress response of E. coli. Both RavA and ViaA have been shown to bind specific anionic lipids and their lipid binding capacity is strongly linked to their sensitising effect to aminoglycosides.\n​This thesis presents the exploration of the connections these three proteins have to each other and their other binding partners by optical and electron microscopy in order to elucidate how their action leads to antibiotic sensitisation and what role their connection to the cell membrane and acid stress might play in this regard. It is shown that LdcI prefers to localise to the cell periphery to efficiently counteract acid stress and that mutations of its active site lead to large domain movements which might play a crucial role in its enzymatic activity. Furthermore\, an investigation of liposome decoration by RavA and ViaA is presented\, demonstrating the effect they have on membrane shape. In addition\, the first cryo-EM structure of ViaA is presented using helical repeat proteins to stabilise the protein. Finally\, predictions of RavA and ViaA protein-protein interactions in the inner E. coli membrane reveal possible functional targets of the proteins and the implications of these new possible avenues for action are discussed with regard of the microscopy investigations.\n\n—\n​​\n\n\nLes séminaires et soutenances sont ouverts à tous\, notez toutefois que l’accès au campus EPN nécessite un avis de rendez-vous. Merci de remplir ce formulaire  et de l’adresser\, plus de 48h à l’avance\, à ce contact. Pensez à vous munir d’une pièce d’identité le jour de votre visite.
URL:https://sfp-alpes.fr/event/soutenance-de-these-de-moritz-kirchner-irig-ibs/
LOCATION:IBS – Salle des séminaires\, IBS 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="IBS":MAILTO:ibs.seminaires@ibs
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260427T140000
DTEND;TZID=Europe/Paris:20260427T150000
DTSTAMP:20260425T130929
CREATED:20260424T080436Z
LAST-MODIFIED:20260424T080436Z
UID:10000127-1777298400-1777302000@sfp-alpes.fr
SUMMARY:Allen SCHEIE (ORNL\, USA)
DESCRIPTION:Quantum dynamics and emergent unconventional phase in Yb2Ti2O7\nRésumé : \nYb2Ti2O7 is a classic and well-studied pyrochlore magnet\, but it continues to hold surprises for science. In this talk I present inelastic neutron scattering showing the low-field evolution of the spectrum from diffuse continua to sharp excitations. I compare this to several theoretical models which capture its behavior to varying degrees\, but which fail in the zero-field phase–which our exact diagonalization calculations show to be an emergent quantum disordered phase between ferromagnetism and antiferromagnetism. Much of the behavior matches the phenomenology of quantum criticality: dimensional reduction\, flat bands collapsing to zero frequency\, and an emergent quantum phase on the boundary between competing phases. Thus although Yb2Ti2O7 is not a quantum spin ice\, it appears to be dominated by intrinsic\, emergent non-magnon fluctuations from an unconventional quantum phase. \n_ \nContact : andrew.fefferman@neel.cnrs.fr \n  \n 
URL:https://sfp-alpes.fr/event/allen-scheie-ornl-usa/
LOCATION:CNRS – Salle Louis Weil (E424)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260428T140000
DTEND;TZID=Europe/Paris:20260428T150000
DTSTAMP:20260425T130929
CREATED:20260326T140308Z
LAST-MODIFIED:20260326T140314Z
UID:10000110-1777384800-1777388400@sfp-alpes.fr
SUMMARY:Elizabeth TILLY (University of New Mexico)
DESCRIPTION:Directional Detection as a Tool for Rare-Event Searches\nRésumé : \nMeasuring the initial scattering angle of a particle track provides powerful discrimination in rare-event searches and can enhance detector characterization. The Migdal effect–characterized by a nuclear recoil and an electron recoil originating from the same vertex–is an inherently directional signal. In this talk\, I will present my work with the Migdal In Galactic Dark mAtter expLoration (MIGDAL) experiment which uses a GEM-based TPC. I will discuss the development of our 3D track reconstruction algorithms and studies exploiting its angular resolution to characterize detector response. I will also discuss measurements of drift properties in negative ion drift gas mixtures\, maximizing noble gas components with the aim of improving spatial resolution for MIGDAL Phase II. Together these demonstrate the power and versatility of precise directional track reconstruction for next-generation rare-event searches. \n— \nHanno Filter (College 3 Secretary) \nExternal visitors may ask for a site access to tellier@ill.fr
URL:https://sfp-alpes.fr/event/elizabeth-tilly-university-of-new-mexico/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260504T140000
DTEND;TZID=Europe/Paris:20260504T150000
DTSTAMP:20260425T130929
CREATED:20260424T081257Z
LAST-MODIFIED:20260424T081257Z
UID:10000128-1777903200-1777906800@sfp-alpes.fr
SUMMARY:Maxime LUCAS (CY Cergy Paris Université)
DESCRIPTION:Non-collinear magnetism in monolayer and magic-angle twisted bilayer graphene\nRésumé : \nRecent studies of twisted bilayer graphene (or other 2D materials) have been stimulated by the discovery of correlations between electronic flatband states due to a moiré pattern [1]. It is shown experimentally and theoretically that the filling of the flat bands affects their correlation and magnetic properties significantly.\nOn the other hand\, the effect of doping on a simple graphene layer is still unclear. Indeed\, its half-filled case is well known [2]\, but unlike other lattices [3] its magnetic properties beyond half filling are mostly unexplored\, except at 1/4 doping [4] i.e when the Fermi energy is set inside of a Van Hove singularity associated to a flatband.\nIn this talk\, I will first present our analysis of graphene magnetism using a combination of the Hubbard model and Hartree-Fock Mean Field Theory (MFT). We work at density values around 1/4 doping (average number of electrons per site Ne=0.75) as it puts the system right into one of the Van Hove singularities found in graphene’s density of states\, giving rise to interesting magnetic properties. We present an interaction-density phase diagram and its associated magnetic orders\, described by their band structure and spin structure factor [5].\nI will then talk about magic-angle twisted bilayer graphene\, to which we applied the same MFT method. While still a work in progress\, I will present the current results we obtained on a Moiré lattice for various values of interaction and flat-band filling\, revealing exotic spin textures such as an antiferromagnetic triangular order on the Moiré scale.\n[1] Y. Cao et al.\, Nature 556\, 43 (2018); Nature 556\, 80 (2018).\n[2] M. Raczkowski et al.\, Phys. Rev. B 101\, 125103 (2020)\, and Refs. therein.\n[3] R. Scholle et al.\, Phys. Rev. B 108\, 035139 (2023)\n[4] S. Jiang\, A. Mesaros\, Y. Ran\, Phys. Rev. X 4\, 031040 (2014)\n[5] M. Lucas\, A. Ralko\, A. Honecker\, G. Trambly de Laissardière\, arXiv:2511.22714 (2025) \n_ \nContact : andrew.fefferman@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/maxime-lucas-cy-cergy-paris-universite/
LOCATION:CNRS – Salle Louis Weil (E424)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260505T090000
DTEND;TZID=Europe/Paris:20260505T100000
DTSTAMP:20260425T130929
CREATED:20260402T153041Z
LAST-MODIFIED:20260402T153041Z
UID:10000117-1777971600-1777975200@sfp-alpes.fr
SUMMARY:Yukiko TAKAHASHI (NIMS\, Japan)
DESCRIPTION:Material development for HAMR and its prospects\nRésumé : \n\n\nWith the rapid expansion of IoT and digital transformation\, data centers demand ever-higher storage densities. Heat-assisted magnetic recording (HAMR) employs L1₀-FePt\, whose magnetic anisotropy is an order of magnitude larger than that of conventional CoCrPt\, enabling ultrahigh-density recording. Achieving areal densities beyond 4 Tbit/in² requires granular films with grain sizes ~4.3 nm and narrow inter-grain pitch with ~1 nm [1]. However\, conventional segregant systems such as FePt-C and FePt-BN have not yet simultaneously satisfied the required microstructural and magnetic criteria.\n​​ To overcome this limitation\, we introduced a data- driven materials design framework using the NIMS Research Data Express (RDE) platform. By collecting experimental datasets and applying machine learning to FePt-C and FePt-BN systems\, we predicted sputtering conditions that led to FePt-BN-C granular films with sub-6 nm grain sizes and coercivities up to 3.7 T. Although iterative prediction cycles improved the microstructure to 4.9 nm grains\, the results also clarified the intrinsic difficulty of meeting all 4 Tbit/in² requirements within this materials system alone.\n​​Beyond materials optimization\, three-dimensional magnetic recording offers an additional pathway toward higher areal density. As a proof of concept\, FePt-C/Ru-C/FePt-C trilayers were fabricated\, demonstrating epitaxial stacking and distinct magnetic switching behaviors arising from different ordering states in the upper and lower FePt layers [2]. Strategies to improve the structural and magnetic quality of the upper layer will be discussed.\n​​\n​​ [1] D. Weller et al.\, IEEE Trans. Magn. 50\, 3100108 (2014).\n​​ [2] P. Tozman et al.\,Acta Mater. 271\, 119869 (2024).\n​​\nMore information : https://www.spintec.fr/seminar-material-development-for-hamr-and-its-prospects/​​\n​\nVisioconference : https://univ-grenoble-alpes-fr.zoom.us/j/98769867024?pwd=dXNnT3RMeThjYStybGVQSUN0TVdJdz09​​\n​​\n​– \n\n\n\n​ Accès : access to CEA require​s an entry au​thorization. Request it : admin.spintec@cea.fr​
URL:https://sfp-alpes.fr/event/yukiko-takahashi-nims-japan/
LOCATION:CEA – Salle de Séminaire IRIG (1005 – 445)\, Laboratoire Irig/Spintec\, salle de séminaire 445\, bâtiment 1005\, CEA-Grenoble\, Grenoble
CATEGORIES:Séminaire
ORGANIZER;CN="IRIG - CEA":MAILTO:odile.rossignol@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260505T140000
DTEND;TZID=Europe/Paris:20260505T150000
DTSTAMP:20260425T130929
CREATED:20260424T082143Z
LAST-MODIFIED:20260424T082143Z
UID:10000129-1777989600-1777993200@sfp-alpes.fr
SUMMARY:Uri VOOL (Max Planck Institute for Chemical Physics of Solids)
DESCRIPTION:Hybrid circuits with van-der-Waals superconductors\nRésumé : \nSuperconducting circuits (SCs) are quantum devices that mimic the behavior of atomic systems even though they are made up of macroscopic microwave circuit elements. Their tunability\, high coherence\, and strong coupling has led to their rapid development as a leading implementation of quantum hardware. Traditional SCs are made using known superconductors such as aluminum or niobium\, but the integration of novel superconductors as part of the circuit can lead to new scientific insights and new capabilities. Such hybrid circuits are ideal sensors\, capable of measuring the superconducting gap structures of novel materials using micron-sized samples\, which is especially useful for interface superconductors or van-der-Waals flakes which cannot be probed with bulk techniques. Furthermore\, the unique quantum properties of unconventional superconductors can be utilized to make a new class of quantum devices. This talk will present recent results where we explore van-der-Waals superconductors in cuprate and kagome systems with hybrid circuits\, and a path towards utilizing them in new hybrid devices for quantum technology. \n_ \nContact : equipe-seminaires-nano@listes.grenoble.cnrs.fr
URL:https://sfp-alpes.fr/event/uri-vool-max-planck-institute-for-chemical-physics-of-solids/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260507T103000
DTEND;TZID=Europe/Paris:20260507T113000
DTSTAMP:20260425T130929
CREATED:20260424T082911Z
LAST-MODIFIED:20260424T083058Z
UID:10000130-1778149800-1778153400@sfp-alpes.fr
SUMMARY:Young Keun KIM (Department of Materials Science and Engineering\, Korea University)
DESCRIPTION:3D Chiral Spintronics: Spin-Selective Transport through Chiral Magnetic Nanohelices\nRésumé : \n\n\nChiral crystals with well-defined handedness in atomic arrangements exhibit intriguing properties such as spin selectivity\, asymmetric magnetoresistance\, and skyrmions. Although similar geometry-induced phenomena have been observed in chiral organic-molecule-based systems\, synthesizing uniform inorganic nanostructures with desired chirality using a scalable method remains challenging. We electrochemically synthesized 3D chiral ferromagnetic cobalt-iron nanohelices from nanoparticles in anodized aluminum oxide templates. The spiral directions and the number of strands were regulated by incorporating chiral molecules and applying an appropriate potential. We demonstrate the observation of Faraday’s law of induction at the nanoscale and how chiral nanohelices regulate the direction of electron flow. The implications of our findings extend to the technological realm\, particularly in the context of charity and ferromagnetism-based spin-tunable devices.\nReference :\nY. S. Jeon et al.\, Science 389. 1031-1036 (2025).\n​​\nMore information :https://www.spintec.fr/seminar-3d-chiral-spintronics-spin-selective-transport-through-chiral-magnetic-nanohelices/​​\n​\nVisioconference : https://univ-grenoble-alpes-fr.zoom.us/j/98769867024?pwd=dXNnT3RMeThjYStybGVQSUN0TVdJdz09​​​\n\n\n\n_\nAccès : access to CEA require​s an entry au​thorization. Request it before avril 29​th​ : admin.spintec@cea.fr​
URL:https://sfp-alpes.fr/event/young-keun-kim-department-of-materials-science-and-engineering-korea-university/
LOCATION:CEA – Salle de Séminaire IRIG (1005 – 445)\, Laboratoire Irig/Spintec\, salle de séminaire 445\, bâtiment 1005\, CEA-Grenoble\, Grenoble
CATEGORIES:Séminaire
ORGANIZER;CN="IRIG - CEA":MAILTO:odile.rossignol@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260511T140000
DTEND;TZID=Europe/Paris:20260511T150000
DTSTAMP:20260425T130929
CREATED:20260424T124347Z
LAST-MODIFIED:20260424T124347Z
UID:10000132-1778508000-1778511600@sfp-alpes.fr
SUMMARY:Bo PENG (Cavendish Laboratory\, University of Cambridge)
DESCRIPTION:Designing molecular quantum materials from first principles\nRésumé : \nQuantum materials provide the basic building blocks for quantum hardware\, but it remains challenging to design robust\, tuneable and scalable material platforms. In this talk\, I will present strategies for engineering quantum materials based on molecular building blocks using first principles calculations. Molecules provide more tuneable building blocks than atoms [1\,2]\, which can self-assemble into larger structures [3\,4] with richer structural behaviours [5] for practical quantum devices. Using pure-carbon fullerene molecules that were believed to be non-magnetic [6]\, we show that magnetism in this material family can be induced purely by symmetry [7]. We can then use this pure-carbon magnetic material to design various quantum platforms\, based on experimentally synthesised monolayers [8\,9]\, to realise exotic quantum phenomena such as ferromagnetic Chern insulators [10]\, antiferromagnetic spin chain [11]\, altermagnetism and quantum spin liquid [12]\, as well as magnetoelectrics where spins can be controlled by electric fields. If time allows\, I will also discuss my ongoing research that combines both atomic and molecular building blocks. With this approach\, we can unlock even more exciting applications such as portable quantum timekeeping\, robust quantum sensing\, and programmable quantum simulations.\n\nReferences:\n[1] BP*. Journal of the American Chemical Society 144\, 19921 (2022).\n[2] J. Wu & BP*. Journal of the American Chemical Society 147\, 1749 (2025).\n[3] BP*. Nano Letters 23\, 652 (2023).\n[4] BP* & M. Pizzochero*. ACS Nano 19\, 29637 (2025).\n[5] A. Shaikh\, J. Wu & BP*. Physical Review Letters 135\, 126103 (2025).\n[6] T. L. Makarova\, et al. Nature 413\, 716 (2001) [Retracted].\n[7] J. Wu\, L. W. Pingen\, T. K. Dickens & BP*. arXiv:2508.18125.\n[8] L. Hou\, et al. Nature 606\, 507 (2022).\n[9] E. Meirzadeh\, et al. Nature 613\, 71 (2023).\n[10] L. W. Pingen\, J. Wu & BP*. arXiv:2508.19849. [Physical Review Letters\, in revision]\n[11] BP* & M. Pizzochero*. arXiv:2508.18849. [Nano Letters\, in press]\n[12] J. Wu\, A. Sanders\, R. Yuan & BP*. arXiv:2508.21056.\n\n_\n\nContact : andrew.fefferman@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/bo-peng-cavendish-laboratory-university-of-cambridge/
LOCATION:CNRS – Salle Louis Weil (E424)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260518T140000
DTEND;TZID=Europe/Paris:20260522T133000
DTSTAMP:20260425T130929
CREATED:20260227T162943Z
LAST-MODIFIED:20260227T163750Z
UID:10000091-1779112800-1779456600@sfp-alpes.fr
SUMMARY:École thématique CNRS : Analyses protéomiques quantitatives
DESCRIPTION:Cette école propose un état de l’art des approches de protéomique quantitative\, de la préparation des échantillons à l’analyse statistique et bioinformatique des données de spectrométrie de masse.\n🔬 Thèmes abordés : quantification relative\, quantification d’échantillons complexes et des modifications post-traductionnelles\, analyses statistiques\, limites méthodologiques et principes FAIR. \nLe ➕ : Ateliers pratiques sur les différents outils pour l’identification et la quantification\, les statistiques et la bioanalyse\n👥 Pour qui ?  chercheurs\, ingénieurs\, biologistes\, bioinformaticiens\, doctorants et post-doctorants académiques ou privés \n📝 Pré-inscriptions et infos 👉  https://et2026.sciencesconf.org/  \n📩 Contact : et2026@sciencesconf.org
URL:https://sfp-alpes.fr/event/ecole-thematique-cnrs-analyses-proteomiques-quantitatives/
LOCATION:Domaine du Lazaret\, La Corniche\, 223 Rue Pasteur Benoît\, Sète\, 34200\, France
CATEGORIES:Ecole,Evènements
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260519T140000
DTEND;TZID=Europe/Paris:20260519T150000
DTSTAMP:20260425T130929
CREATED:20260424T125744Z
LAST-MODIFIED:20260424T125744Z
UID:10000134-1779199200-1779202800@sfp-alpes.fr
SUMMARY:Arnaud CLAUDEL (CNRS - Institut Néel)
DESCRIPTION:Growth of graphene by CVD and transfer on various substrates\nRésumé : \nGraphene is a monolayer of sp² carbon atoms which forms a stable\, continuous and gas-impermeable membrane. It also exhibits several exceptional properties (electrical conductivity\, optical transparency\, …)\, making it a candidate of interest for various research topics and applications (transparent electrodes\, detection of chemical or biochemical compounds\, …). Since its discovery in 2004\, graphene has paved the way for two-dimensional (2D) materials\, which are currently the subject of extensive research. For over 15 years\, Institut Néel has been developing and optimising processes for the growth of graphene by chemical vapour deposition (CVD) as well as for transferring these layers onto foreign substrates for a wide range of fundamental and applied research projects. Graphene growth process by CVD and the different forms of graphene (monolayers\, multilayers\, single crystals\, …) will be described. Graphene transfer onto different types of materials will be presented in the frame of various research projects. \nShort Bio/CV \nArnaud CLAUDEL has a MSc (2006) and PhD (2009) in materials science and engineering from Grenoble INP. With 20 years of R&D experience in materials science\, he has been previously R&D project manager in both a company (ACERDE SAS – 2006-2012) and research institutes (CEA-LITEN – 2012-2013\, LMGP – 2014-2015) within fundamental and applicative research projects with academic and industrial partners. Since 2016\, he is CNRS research engineer and since 2021\, manager of the Epitaxial and thin layers (EpiCM) technological group at Institut Néel. His research activities are dedicated to processes for growing epitaxial and thin layers and are mainly focused on the growth and transfer of graphene layers since 2019. \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/arnaud-claudel-cnrs-institut-neel/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260521T140000
DTEND;TZID=Europe/Paris:20260521T150000
DTSTAMP:20260425T130929
CREATED:20260424T131420Z
LAST-MODIFIED:20260424T131442Z
UID:10000135-1779372000-1779375600@sfp-alpes.fr
SUMMARY:Julien GABELLI (LPS\, Université Paris-Saclay)
DESCRIPTION:Direct Surface Plasmon Detection using Kinetic Inductance Detectors\nRésumé : \nWe present a new kind of on-chip surface plasmon polariton (SPP) detector based on kinetic inductance detectors (KIDs). Our device combines a hybrid NbTiN-Al microwave resonators architecture\, where aluminum serves not only as a photon absorber but also as a plasmonic material. The characteristics of this new detector are demonstrated by detecting optically excited surface plasmon polaritons (SPPs) at a wavelength of 1.5 µm. Notably\, our detector enables direct observation of quasiparticle diffusion in aluminum\, providing new insights into non-equilibrium dynamics at the nanoscale. By detecting SPPs from inelastic tunneling in Al/Al₂O₃/Al junctions\, this work opens new approaches for probing current fluctuations at optical frequencies. \n_ \nContact : florence.levy-bertrand@neel.cnrs.fr  \n 
URL:https://sfp-alpes.fr/event/julien-gabelli-lps-universite-paris-saclay/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260527T090000
DTEND;TZID=Europe/Paris:20260529T170000
DTSTAMP:20260425T130929
CREATED:20260305T155829Z
LAST-MODIFIED:20260305T160317Z
UID:10000095-1779872400-1780074000@sfp-alpes.fr
SUMMARY:Mag2Pol MasterClass
DESCRIPTION:We are pleased to announce the first Mag2Pol MasterClass\, an advanced course dedicated to diffraction data analysis using X-ray and (polarised) neutron data from powders and single-crystals. \nThe MasterClass will take place at the Institut Laue-Langevin (ILL) in Grenoble\, France. It is aimed at both early-career and experienced researchers\, and will combine focused lectures with hands-on tutorials. Particular emphasis will be placed on magnetic structure determination and symmetry analysis using Mag2Pol. \nTo ensure high pedagogical quality and close interaction between participants and instructors\, attendance will be limited to 30 participants. Selection will be based on a short CV and a brief statement of motivation. Please submit your applications before 15 March 2026. \nFull details\, including important dates\, registration information\, and a tentative program\, are available here : https://workshops.ill.fr/e/Mag2Pol \nFor any questions\, please contact us at : mag2pol@ill.fr
URL:https://sfp-alpes.fr/event/mag2pol-masterclass/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260527T140000
DTEND;TZID=Europe/Paris:20260527T160000
DTSTAMP:20260425T130929
CREATED:20260424T084229Z
LAST-MODIFIED:20260424T084229Z
UID:10000131-1779890400-1779897600@sfp-alpes.fr
SUMMARY:Thomas BRUN (IRIG / Spintec)
DESCRIPTION:MAROT : Un magnétomètre miniature pour l’exploration spatiale\nRésumé : \nCette thèse porte sur la réalisation d’un magnétomètre dans le but de mesurer les fluctuations de champ magnétique dans les plasmas spatiaux du système solaire. Des magnétomètres de type Search-coil et Fluxgate sont couramment embarqués sur des satellites et produisent des mesures de haute qualité. De nos jours\, la recherche utilise de plus en plus de petits satellites dont l’archétype est le « Cubsat » qui est un cube de 10 cm de côté. Cependant\, l’instrumentation actuelle ne peut pas être miniaturisée sans compromettre les performances. C’est dans ce cadre que le projet MAROT propose l’élaboration d’un magnétomètre miniature utilisant comme élément sensible des jonctions tunnel magnétiques (MTJ)\, pour mesurer des champs de l’ordre du picotesla. Les jonctions tunnel magnétiques sont des éléments convertissant une variation d’aimantation en variation de résistance\, permettant ainsi de mesurer les variations de champ magnétique. Ces magnétomètres sont déjà utilisés comme capteurs dans de nombreuses applications (automobile\, imagerie médicale\, capteurs dans des systèmes électroniques…) de par leur haute sensibilité au champ magnétique. Cependant\, les MTJ souffrent d’une perte de détectivité à basse fréquence car leur bruit évolue inversement à la fréquence du signal mesuré. Or les basses fréquences (< 100 Hz) sont les fréquences pertinentes pour les plasmas spatiaux. Pour compenser cette limitation\, le capteur MAROT contient des concentrateurs de flux (FC) pour amplifier le champ magnétique sur la jonction. L’optimisation du capteur passe d’une part par l’augmentation de sa sensibilité et d’autre part par la diminution du bruit\, afin d’atteindre une détectivité de l’ordre du pT/√Hz à 10 Hz. Les jonctions tunnels sont constituées d’un empilement constitué de plusieurs blocs : couche de référence\, barrière tunnel\, couche libre. Dans ma thèse\, j’ai utilisé et réalisé des jonctions tunnels à réponse symétrique\, présentant un état antiparallèle à champ nul\, obtenu après un recuit sous champ. Cet état\, ainsi que la configuration macrospin de la couche libre\, minimisant l’hystérèse\, est réalisée en piégeant légèrement la couche libre par une couche antiferromagnétique. Lors de cette thèse\, tout d’abord\, j’ai pu avoir accès à une couche libre à base de FeCoSiB\, couche plus amorphe et plus douce que le NiFe précédemment utilisé\, permettant une amélioration du rapport de magnétorésistance (TMR) d’un facteur supérieur à 2\, jusqu’à 250%. Ces optimisations ont permis de gagner un facteur 3 dans la sensibilité des jonctions. Dans un second temps\, j’ai réalisé des simulations de l’amplification du champ magnétique par les concentrateurs de flux (gain) en fonction des dimensions et caractéristiques de l’entrefer. Cette étude m’a permis de dessiner un nouveau design de capteur dans lequel des jonctions en série-parallèle sont ajoutées dans l’entrefer afin d’augmenter le volume magnétique\, pour réduire le bruit\, tout en maintenant un gain suffisant. Des capteurs avec ce design ont été fabriqués. Les premières mesures indiquent des sensibilités très grandes\, de l’ordre de 2000 %/mT. Les mesures de bruit sont en cours\, et semblent indiquer que les FC\, à base de NiFe déposés par électrolyse\, apportent du bruit supplémentaire. La composition de ces FC sera donc à optimiser afin d’améliorer la détectivité\, actuellement autour de quelques centaines de pT/√Hz à 10 Hz. Pour finir\, j’ai commencé à développer une méthode de hachage de champ magnétique pour réduire le bruit. Une couche magnétostrictive\, déposée sur un substrat piézoélectrique soumis à une tension\, peut voir sa direction d’anisotropie modifiée. Ce dispositif pourra être placé au-dessus de l’entrefer des FC et utilisé comme un interrupteur magnétique\, qui alternativement modifie le flux magnétique sur les jonctions. Un gain d’un facteur au moins 10 sur la détectivité est attendu\, ce qui permettra de s’approcher de l’objectif du pT/√Hz à 10 Hz. \nPlus d’information :https://www.spintec.fr/phd-defense-marot-a-miniature-magnetometer-for-space-exploration/ \nPour suivre la soutenance ​​​en visioconférence : https://univ-grenoble-alpes-fr.zoom.us/j/98769867024 \n_ \n\n\nP​resential access to the conference room at CEA in Gre​​noble requires an entry authorization\, request it before may 16th​​ to admin.spintec@cea.fr
URL:https://sfp-alpes.fr/event/thomas-brun-irig-spintec/
LOCATION:CEA – Salle de Séminaire IRIG (1005 – 445)\, Laboratoire Irig/Spintec\, salle de séminaire 445\, bâtiment 1005\, CEA-Grenoble\, Grenoble
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="IRIG - CEA":MAILTO:odile.rossignol@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260604T160000
DTEND;TZID=Europe/Paris:20260604T170000
DTSTAMP:20260425T130929
CREATED:20260213T142628Z
LAST-MODIFIED:20260213T143322Z
UID:10000071-1780588800-1780592400@sfp-alpes.fr
SUMMARY:Sophie GUERON
DESCRIPTION:Explorer les isolants topologiques avec la physique mésoscopique\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/12406/ \nContact : louis.fayard@IJCLAB.INP3.FR
URL:https://sfp-alpes.fr/event/sophie-gueron/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260623T110000
DTEND;TZID=Europe/Paris:20260623T120000
DTSTAMP:20260425T130929
CREATED:20260326T142350Z
LAST-MODIFIED:20260326T142357Z
UID:10000111-1782212400-1782216000@sfp-alpes.fr
SUMMARY:Lucas GOEHRING (Nottingham Trent University (UK))
DESCRIPTION:Structure formation in paints and coatings\nRésumé : \nPaints and coatings are typically a mix of small particles\, like pigments\, along with a polymer glue or binder. Similar products include inks\, varnishes\, cosmetics\, ceramics and even the lithium-ion battery electrodes that power modern electric vehicles. These materials are prepared as a liquid\, spread over a surface\, and dried.  As anyone who has painted a wall will know\, however\, this process can easily go wrong. Even a well-prepared paint can develop an undesirable skin and wrinkle\, crack\, or peel\, and these coatings can also visibly degrade over time. \nIn this talk I will go through the key stages of film formation\, or how a colloidal dispersion dries.  I will show how small angle scattering experiments (SANS/SAXS) helped to elucidate how the structure of the film changes during drying\, evolving from a dilute gas of particles\, into a transient gel where capillary pressures balance electrostatic repulsion\, to a final aggregated solid. I will then turn to look at how the insight gained has led to a better understanding of mechanical instabilities like fracture\, shear banding\, birefringence\, and peeling\, as well as revealing an unexpected route to colloidal crystallisation. \nFinally\, I will summarise our recent work using neutron scattering techniques to investigate blanching\, a degradation process that can cause a visible whitening in the traditional varnishes that are used as a protective outer coating on many historically and artistically important paintings. \nSpeaker’s website: https://www.ntu.ac.uk/staff-profiles/science-technology/lucas-goehring \n— \nOrsolya Czakkel (College 9 Secretary) \nExternal visitors may ask for a site access to tellier@ill.fr \nZoom link: https://ill.zoom.us/j/95581858117?pwd=hh9paEQj6BF8u9WYzfZkvZaGspe1i3.1  – Passcode: 078610 \n 
URL:https://sfp-alpes.fr/event/lucas-goehring-nottingham-trent-university-uk/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260630T103000
DTEND;TZID=Europe/Paris:20260630T113000
DTSTAMP:20260425T130929
CREATED:20260326T145827Z
LAST-MODIFIED:20260326T145855Z
UID:10000113-1782815400-1782819000@sfp-alpes.fr
SUMMARY:Carlotta PORZIO (CERN\, Switzerland)
DESCRIPTION:Experimental activities at the ISOLDE-CERN facility\nRésumé : \nThe ISOLDE factily at CERN is one of the world-leading laboratories for the production of radioactive ion beams (RIBs) with the ISOL (Isotope Separation On-Line) method. More than 1000 isotopes of over 70 chemical elements have been produced via the interaction of a 1.4 GeV proton beam with a variety of target materials. After ionization and mass separation\, the beams can be delivered at low energy or post-accelerated up to about 10 MeV/u using the HIE-ISOLDE linear accelerator. The facility supports a broad scientific program\, spanning nuclear structure studies\, nuclear astrophysics\, materials science\, life sciences\, and investigations of fundamental interactions. \nAmong the experimental setups available at HIE-ISOLDE\, the Miniball gamma-ray spectrometer is employed to investigate both collective and single-particle properties of exotic nuclei. Combined with the post-accelerated radioactive ion beams\, Miniball enables nuclear structure studies via Coulomb excitation and nucleon-transfer reactions. \nThis seminar will provide an introduction to the ISOLDE facility and the ISOL RIB production method\, and an overview of experimental setups and techniques\, with a focus on the Miniball spectrometer. \n— \nHanno Filter (College 3 Secretary \nExternal visitors may ask for a site access to tellier@ill.fr \n 
URL:https://sfp-alpes.fr/event/carlotta-porzio-cern-switzerland/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261008T160000
DTEND;TZID=Europe/Paris:20261008T170000
DTSTAMP:20260425T130929
CREATED:20260409T110848Z
LAST-MODIFIED:20260409T110853Z
UID:10000124-1791475200-1791478800@sfp-alpes.fr
SUMMARY:Cecile ENGRAND
DESCRIPTION:Les micrométéorites : les messagères de notre origine\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13491/ \nContact : louis.fayard@IJCLAB.INP3.FR \n  \n 
URL:https://sfp-alpes.fr/event/cecile-engrand/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
END:VCALENDAR