3 papers
cond-mat.str-el2026
Many-body Euler topology
Axel Fünfhaus, Titus Neupert, Thilo Kopp +1
Integer and fractional Chern insulators exhibit a nonzero quantized anomalous Hall conductivity due to a spontaneous breaking of time reversal symmetry. To identify nontrivial topo…
cond-mat.str-el2025
Band representations in Strongly Correlated Settings: The Kitaev Honeycomb Model
Axel Fünfhaus, Mikel GarcÃa-DÃez, M. G. Vergniory +3
In the study of quantum spin liquids, the Kitaev model plays a pivotal role due to the fact that its ground state is exactly known as well as the fact that it may be realized in st…
cond-mat.mes-hall2024
Topological Phase Transitions of Interacting Fermions in the Presence of a Commensurate Magnetic Flux
Axel Fünfhaus, Marius Möller, Thilo Kopp +1
Motivated by recently reported magnetic-field induced topological phases in ultracold atoms and correlated Moiré materials, we investigate topological phase transitions in a minim…