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

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

14:00 Arrival

14:00 - 18:30

18:30 Dinner: Dinner
Dinner
18:30 - 20:30

Monday 5 January 2026

08:30 Opening remarks

08:30 - 08:45
08:45 Monday Morning Session I, Chair G. Aeppli
08:45 - 10:00
Contributions

08:45 Kagome spin ice and strange metal phases - Philipp Gegenwart (University of Augsburg)

09:20 Magnetism of the RT6Sn6 kagome metals - Rob McQueeney (Iowa State University and Ames Laboratory)
10:00 Coffee Break
Coffee Break
10:00 - 10:30
10:30 Monday Morning Session II, Chair C. Broholm
10:30 - 11:45
Contributions

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

11:05 Dirac-like spinons and emergent symmetry in s=1/2 kagome antiferromagnets - Kwang-Yong Choi (Sungkyunkwan Unversity)
11:45 Midday Break
Midday Break
11:45 - 17:00
17:00 Monday Afternoon Session, Chair D. Mihailovic
17:00 - 18:30
Contributions

17:00 The puzzle of metallic and insulating phases at the surface of 1T-TaSe2 - Michael Straub (University of Geneva)

17:20 Interlayer stacking controls the electronic properties of the van der Waals material 1T-TaS2 - Simon Gerber (PSI - Paul Scherrer Institut)

17:55 Magnetic order and interactions in two polytypes of V1/3NbS2 - Collin Broholm (Johns Hopkins University)
18:45 Dinner

18:45 - 20:45
Tuesday 6 January 2026
08:30 Tuesday Morning Session I, Chair E. Demler
08:30 - 09:45
Contributions

08:30 Interfacial electron-phonon coupling in 2D materials - Felix Baumberger (University of Geneva & SLS, PSI)

09:05 Engineering quantum materials by moiré potentials and light fields - Shuyun Zhou (Tsinghua University)
09:45 Tuesday Coffee Break and Poster
09:45 - 10:15
Contributions

09:45 A New Look on an Old Problem: Mass Enhancement in Fermi Liquids - Anna Efimova (UniversitÃ© de GenÃ¨ve)

09:45 Exotic superconducting states in altermagnets - Kirill Parshukov (Max Planck Institute for Solid State Research)

09:45 Exploring spin reorientation and structural stability in distorted kagome metal RAgGe (R = Tb, Dy) - Jayjit Kumar Dey (Deutsches Elektronen-Synchrotron DESY)
10:15 Tuesday Morning Session II, Chair A. Imamoglu
10:15 - 11:30
Contributions

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

10:50 Coulomb blockade in superconducting graphene - Klaus Ensslin (ETH Zurich)
11:30 Midday Break
Midday Break
11:30 - 17:00
17:00 Tuesday Afternoon Session, Chair R. McQueeney
17:00 - 18:45
Contributions

17:00 Terahertz-frequency magnons and chiral phonons in a kagome ferromagnetic Weyl semimetal - Luyi Yang (Tsinghua University)

17:35 Unconventional magnetism in kagome magnet Co3Sn2S2 - Yona Soh

18:10 Neutron scattering studies of two kagome magnets - Romain Franck Sibille (PSI - Paul Scherrer Institut)
19:00 Dinner

19:00 - 21:00
Wednesday 7 January 2026
08:30 Wednesday Morning Session I, Chair A. Balatsky
08:30 - 09:45
Contributions

08:30 Orbital magnetism and flat bands in magnetic field - Oskar Vafek (William I. Fine Theoretical Physics Institute, University of Minnesota)

09:05 Kinetic magnetism in triangular lattices - Eugene Demler (ETH Zurich)
09:45 Wednesday Coffee Break & Poster
09:45 - 10:15
Contributions

09:45 Probing the magnetic order in a few-layer CrPS₄ - Katharina Kress (Department of Physics, University of Basel, Basel, Switzerland)

09:45 Buckling of NbSe2 thin films - Nicolas Brunner (University of Fribourg)

09:45 Charge-density-wave quantum critical point in 2H-TaSe2 - Frank Weber (Karlsruhe Institute of Technology)

09:45 Investigating magnetism in 1T-NbSe2 - Ryan Thompson (University of Fribourg)
10:15 Wednesday Morning Session II, Chair S. Zhou
10:15 - 11:30
Contributions

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

10:50 Moire materials - Twisted graphene and the quantum twisting microscope - Dima EFETOV (Ludwig-Maximilians-Universität München)
11:30 Midday Break
Midday Break
11:30 - 17:00
17:00 Wednesday Afternoon Session, Chair L. Yang
17:00 - 18:35
Contributions

17:00 Soft-phonon CDW formation in Kagome metals - Yu SONG (Zhejiang University)

17:20 Altermagnetism and Flat band Enhanced AFM Fluctuation in Kagome CsCr3Sb5 - Chenchao Xu (Hangzhou Normal University)

17:40 Unusual aspects of the coherent phonon in CsV3Sb5: its implication for the loop-current and chirality - Chennan Wang (UniversitÃ¤t Freiburg)

18:00 Real-time twisting on a chip - Yuan Cao (UC Berkeley)
18:50 Dinner

18:50 - 20:50
Thursday 8 January 2026
08:30 Thursday Morning Session I, Chair V. Dobrosavljevic
08:30 - 09:45
Contributions

08:30 Signatures of unconventional superconductivity in the kagome superconductors Cs(V1-xTix)3Sb5 - KEE HOON KIM (Seoul National Univerisity)

09:05 Failed Superconductivity in a Geometrically Frustrated 2D Mott System - Dragana Popović
09:45 Thursday Coffee Break & Poster
09:45 - 10:15
Contributions

09:45 Angle-dependent magnetoresistance revealing a structural transition in Mn3Ga thin films - Zhen Tao (PSI - Paul Scherrer Institut)

09:45 Sub-50mK adiabatic demagnetization refrigeration with frustrated Yb-oxide magnets in the PPMS - Philipp Gegenwart (University of Augsburg)

09:45 Unraveling Intertwined Orders in the Strongly Correlated Kagome Metal CsCr3Sb5 - Luyi Yang (Tsinghua University)
10:15 Thursday Morning Session II, Chair L. Rademaker
10:15 - 11:30
Contributions

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

10:50 Quantum criticality and emerging universality in kagome metals and twisted WSe2 - Qimiao Si (Rice University)
11:30 Midday Break
Midday Break
11:30 - 17:00
17:00 Thursday Afternoon Session, Chair Q. Si
17:00 - 18:15
Contributions

17:00 Fractional Chern insulator edges: crystalline effects and optical measurement - Johannes Motruk (University of Geneva)

17:20 Disorder is both friend and foe to melting of Wigner-Mott insulators - Vladimir Dobrosavljevic (Florida State University)

17:55 A New Perspective on Correlated Metals: from Concealed Mott Quantum Criticality to Disorder in Heavy Fermi Liquids - Louk Rademaker (Université de Genève)
18:30 Dinner

18:30 - 20:30
Friday 9 January 2026
08:30 Friday Morning Session, Chair S. Gerber
08:30 - 10:15
Contributions

08:30 Controling solid state phases through vacuum field - Jerome Faist (ETH Zurich)

09:05 Quantum Printing and Rectification - Alexander Balatsky (Nordita)

09:40 Phantom quasiparticle dynamics in real time at a metastable Wigner crystal vertex. - Dragan Mihailovic (Jozef Stefan Institute)
10:15 Closing remarks

10:15 - 10:30

10:30 Departure

10:30 - 12:00