448 citations · 7.2k across the 135 of their papers we have counts for
137 papers
Antiferromagnetic Chern insulator in centrosymmetric systems
Morad Ebrahimkhas, Götz S. Uhrig, Walter Hofstetter +1
An antiferromagnetic Chern insulator (AFCI) can exist if the effect of the time-reversal transformation on the electronic state cannot be compensated by a space group operation. Th…
Invisible flat bands on a topological chiral edge
Youjiang Xu, Irakli Titvinidze, Walter Hofstetter
We prove that invisible bands associated with zeros of the single-particle Green's function exist ubiquitously at topological interfaces of 2D Chern insulators, dual to the chiral…
Hubbard model on the kagome lattice with time-reversal invariant flux and spin-orbit coupling
Irakli Titvinidze, Julian Legendre, Karyn Le Hur +1
We study the Hubbard model with time-reversal invariant flux and spin-orbit coupling and position-dependent onsite energies on the kagome lattice, using numerical and analytical me…
Supersolid phases of ultracold bosons trapped in optical lattices dressed with Rydberg -states
Mathieu Barbier, Henrik Lütjeharms, Walter Hofstetter
Engineering quantum phases with spontaneously broken symmetries is a major goal of research in different fields. Trapped ultracold Rydberg-excited atoms in optical lattices are a p…
Extended Bose-Hubbard models with Rydberg macrodimer dressing
Mathieu Barbier, Simon Hollerith, Walter Hofstetter
Extended Hubbard models have proven to bear novel quantum states, but their experimental realization remains challenging. In this work we propose to use bosonic quantum gases dress…
Spin-orbit coupling in the kagome lattice with flux and time-reversal symmetry
Irakli Titvinidze, Julian Legendre, Maarten Grothus +3
We study the topological properties of a spin-orbit coupled Hofstadter model on the Kagome lattice. The model is time-reversal invariant and realizes a topological i…