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

Session

Tuesday Morning Session II, Chair A. Imamoglu

6 Jan 2026, 10:15

Saas Fee

50. Revealing Correlations and Orbital Textures in Quantum Materials with photoemission spectroscopy

Michael Schüler (Paul Scherrer Institute)

06/01/2026, 10:15

Theory

Invited talk (by invitation only)

Angle-resolved photoemission spectroscopy (ARPES) provides direct momentum-resolved access to correlation effects and orbital textures in quantum materials. In this talk, I will show how a combined experimental and theoretical approach allows us to extract these key electronic properties in van der Waals and Kagome-related systems.

First, I will discuss our ARPES and...

28. Coulomb blockade in superconducting graphene

Klaus Ensslin (ETH Zurich)

06/01/2026, 10:50

van der Waals experimental

Invited talk (by invitation only)

Superconductivity in graphene can arise when 2,3 or 4 layers are twisted with respect to each other at the so-called magic angle. We experimentally demonstrate Josephson Junctions and SQUIDS that behave like devices fabricated from conventional superconductors and insulators. We also observe time-resolved vortex trapping and detect quantum tunneling of vortices at low temperatures. For samples...