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Intrinsic axion insulating behavior in antiferromagnetic MnBiTe
Na Hyun Jo, Lin-Lin Wang, Robert-Jan Slager +6
A striking feature of time reversal symmetry (TRS) protected topological insulators (TIs) is that they are characterized by a half integer quantum Hall effect on the boundary when…
Non-Abelian reciprocal braiding of Weyl points and its manifestation in
Adrien Bouhon, QuanSheng Wu, Robert-Jan Slager +3
Weyl semimetals in three-dimensional crystals provide the paradigm example of topologically protected band nodes. It is usually taken for granted that a pair of colliding Weyl poin…
Hopf characterization of two-dimensional Floquet topological insulators
F. Nur Ünal, André Eckardt, Robert-Jan Slager
We present a topological characterization of time-periodically driven two-band models in 2+1 dimensions as Hopf insulators. The intrinsic periodicity of the Floquet system with res…
-fluxes, semi-metals and flat bands in artificial materials
Toshikaze Kariyado, Robert-Jan Slager
The possibility of engineering experimentally viable systems that realize gauge fluxes within plaquettes of hopping have been subject of search for decades due to vast amounts of t…
Wannier representation of Floquet topological states
Masaya Nakagawa, Robert-Jan Slager, Sho Higashikawa +1
A universal feature of topological insulators is that they cannot be adiabatically connected to an atomic limit, where individual lattice sites are completely decoupled. This prope…
Non-Hermitian Boundary Modes
Dan S. Borgnia, Alex Jura Kruchkov, Robert-Jan Slager
We consider conditions for the existence of boundary modes in non-Hermitian systems with edges of arbitrary co-dimension. Through a universal formulation of formation criteria for…