Name: Condensed Matter Physics in the Alps: Geometric Frustration, Topology, Flat Bands, and Correlation in Kagome and Van der Waals Systems
Start: 2026-01-04T14:00:00+01:00
End: 2026-01-09T12:30:00+01:00
Location: Saas Fee

Condensed Matter Physics in the Alps: Geometric Frustration, Topology, Flat Bands, and Correlation in Kagome and Van der Waals Systems

from Sunday, January 4, 2026 (2:00 PM) to Friday, January 9, 2026 (12:30 PM)

Monday, December 29, 2025
Tuesday, December 30, 2025
Wednesday, December 31, 2025
Thursday, January 1, 2026
Friday, January 2, 2026
Saturday, January 3, 2026
Sunday, January 4, 2026

2:00 PM Arrival

2:00 PM - 6:30 PM

6:30 PM Dinner: Dinner
Dinner
6:30 PM - 8:30 PM

Monday, January 5, 2026

8:30 AM Opening remarks

8:30 AM - 8:45 AM
8:45 AM Monday Morning Session I, Chair G. Aeppli
8:45 AM - 10:00 AM
Contributions

8:45 AM Kagome spin ice and strange metal phases - Philipp Gegenwart (University of Augsburg)

9:20 AM Magnetism of the RT6Sn6 kagome metals - Rob McQueeney (Iowa State University and Ames Laboratory)
10:00 AM Coffee Break
Coffee Break
10:00 AM - 10:30 AM
10:30 AM Monday Morning Session II, Chair C. Broholm
10:30 AM - 11:45 AM
Contributions

10:30 AM Magnetism on the Shastry-Sutherland lattice - Frédéric Mila (Ecole Polytechnique Fédérale de Lausanne)

11:05 AM Dirac-like spinons and emergent symmetry in s=1/2 kagome antiferromagnets - Kwang-Yong Choi (Sungkyunkwan Unversity)
11:45 AM Midday Break
Midday Break
11:45 AM - 5:00 PM
5:00 PM Monday Afternoon Session, Chair D. Mihailovic
5:00 PM - 6:30 PM
Contributions

5:00 PM The puzzle of metallic and insulating phases at the surface of 1T-TaSe2 - Michael Straub (University of Geneva)

5:20 PM Interlayer stacking controls the electronic properties of the van der Waals material 1T-TaS2 - Simon Gerber (PSI - Paul Scherrer Institut)

5:55 PM Magnetic order and interactions in two polytypes of V1/3NbS2 - Collin Broholm (Johns Hopkins University)
6:45 PM Dinner

6:45 PM - 8:45 PM
Tuesday, January 6, 2026
8:30 AM Tuesday Morning Session I, Chair E. Demler
8:30 AM - 9:45 AM
Contributions

8:30 AM Interfacial electron-phonon coupling in 2D materials - Felix Baumberger (University of Geneva & SLS, PSI)

9:05 AM Engineering quantum materials by moiré potentials and light fields - Shuyun Zhou (Tsinghua University)
9:45 AM Tuesday Coffee Break and Poster
9:45 AM - 10:15 AM
Contributions

9:45 AM A New Look on an Old Problem: Mass Enhancement in Fermi Liquids - Anna Efimova (UniversitÃ© de GenÃ¨ve)

9:45 AM Exotic superconducting states in altermagnets - Kirill Parshukov (Max Planck Institute for Solid State Research)

9:45 AM Exploring spin reorientation and structural stability in distorted kagome metal RAgGe (R = Tb, Dy) - Jayjit Kumar Dey (Deutsches Elektronen-Synchrotron DESY)
10:15 AM Tuesday Morning Session II, Chair A. Imamoglu
10:15 AM - 11:30 AM
Contributions

10:15 AM Revealing Correlations and Orbital Textures in Quantum Materials with photoemission spectroscopy - Michael Schüler (Paul Scherrer Institute)

10:50 AM Coulomb blockade in superconducting graphene - Klaus Ensslin (ETH Zurich)
11:30 AM Midday Break
Midday Break
11:30 AM - 5:00 PM
5:00 PM Tuesday Afternoon Session, Chair R. McQueeney
5:00 PM - 6:45 PM
Contributions

5:00 PM Terahertz-frequency magnons and chiral phonons in a kagome ferromagnetic Weyl semimetal - Luyi Yang (Tsinghua University)

5:35 PM Unconventional magnetism in kagome magnet Co3Sn2S2 - Yona Soh

6:10 PM Neutron scattering studies of two kagome magnets - Romain Franck Sibille (PSI - Paul Scherrer Institut)
7:00 PM Dinner

7:00 PM - 9:00 PM
Wednesday, January 7, 2026
8:30 AM Wednesday Morning Session I, Chair A. Balatsky
8:30 AM - 9:45 AM
Contributions

8:30 AM Orbital magnetism and flat bands in magnetic field - Oskar Vafek (William I. Fine Theoretical Physics Institute, University of Minnesota)

9:05 AM Kinetic magnetism in triangular lattices - Eugene Demler (ETH Zurich)
9:45 AM Wednesday Coffee Break & Poster
9:45 AM - 10:15 AM
Contributions

9:45 AM Probing the magnetic order in a few-layer CrPS₄ - Katharina Kress (Department of Physics, University of Basel, Basel, Switzerland)

9:45 AM Buckling of NbSe2 thin films - Nicolas Brunner (University of Fribourg)

9:45 AM Charge-density-wave quantum critical point in 2H-TaSe2 - Frank Weber (Karlsruhe Institute of Technology)

9:45 AM Investigating magnetism in 1T-NbSe2 - Ryan Thompson (University of Fribourg)
10:15 AM Wednesday Morning Session II, Chair S. Zhou
10:15 AM - 11:30 AM
Contributions

10:15 AM Optical pumping of topological states in twisted MoTe2 - Atac Imamouglu (ETH)

10:50 AM Moire materials - Twisted graphene and the quantum twisting microscope - Dima EFETOV (Ludwig-Maximilians-Universität München)
11:30 AM Midday Break
Midday Break
11:30 AM - 5:00 PM
5:00 PM Wednesday Afternoon Session, Chair L. Yang
5:00 PM - 6:35 PM
Contributions

5:00 PM Soft-phonon CDW formation in Kagome metals - Yu SONG (Zhejiang University)

5:20 PM Altermagnetism and Flat band Enhanced AFM Fluctuation in Kagome CsCr3Sb5 - Chenchao Xu (Hangzhou Normal University)

5:40 PM Unusual aspects of the coherent phonon in CsV3Sb5: its implication for the loop-current and chirality - Chennan Wang (UniversitÃ¤t Freiburg)

6:00 PM Real-time twisting on a chip - Yuan Cao (UC Berkeley)
6:50 PM Dinner

6:50 PM - 8:50 PM
Thursday, January 8, 2026
8:30 AM Thursday Morning Session I, Chair V. Dobrosavljevic
8:30 AM - 9:45 AM
Contributions

8:30 AM Signatures of unconventional superconductivity in the kagome superconductors Cs(V1-xTix)3Sb5 - KEE HOON KIM (Seoul National Univerisity)

9:05 AM Failed Superconductivity in a Geometrically Frustrated 2D Mott System - Dragana Popović
9:45 AM Thursday Coffee Break & Poster
9:45 AM - 10:15 AM
Contributions

9:45 AM Angle-dependent magnetoresistance revealing a structural transition in Mn3Ga thin films - Zhen Tao (PSI - Paul Scherrer Institut)

9:45 AM Sub-50mK adiabatic demagnetization refrigeration with frustrated Yb-oxide magnets in the PPMS - Philipp Gegenwart (University of Augsburg)

9:45 AM Unraveling Intertwined Orders in the Strongly Correlated Kagome Metal CsCr3Sb5 - Luyi Yang (Tsinghua University)
10:15 AM Thursday Morning Session II, Chair L. Rademaker
10:15 AM - 11:30 AM
Contributions

10:15 AM Evidence for electron fractionalization in a kagome metal - Gabriel Aeppli (EPFL)

10:50 AM Quantum criticality and emerging universality in kagome metals and twisted WSe2 - Qimiao Si (Rice University)
11:30 AM Midday Break
Midday Break
11:30 AM - 5:00 PM
5:00 PM Thursday Afternoon Session, Chair Q. Si
5:00 PM - 6:15 PM
Contributions

5:00 PM Fractional Chern insulator edges: crystalline effects and optical measurement - Johannes Motruk (University of Geneva)

5:20 PM Disorder is both friend and foe to melting of Wigner-Mott insulators - Vladimir Dobrosavljevic (Florida State University)

5:55 PM A New Perspective on Correlated Metals: from Concealed Mott Quantum Criticality to Disorder in Heavy Fermi Liquids - Louk Rademaker (Université de Genève)
6:30 PM Dinner

6:30 PM - 8:30 PM
Friday, January 9, 2026
8:30 AM Friday Morning Session, Chair S. Gerber
8:30 AM - 10:15 AM
Contributions

8:30 AM Controling solid state phases through vacuum field - Jerome Faist (ETH Zurich)

9:05 AM Quantum Printing and Rectification - Alexander Balatsky (Nordita)

9:40 AM Phantom quasiparticle dynamics in real time at a metastable Wigner crystal vertex. - Dragan Mihailovic (Jozef Stefan Institute)
10:15 AM Closing remarks

10:15 AM - 10:30 AM

10:30 AM Departure

10:30 AM - 12:00 PM

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