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Symmetry Indicators for Inversion-Symmetric Non-Hermitian Topological Band Structures
Pascal M. Vecsei, M. Michael Denner, Titus Neupert +1
We characterize non-Hermitian band structures by symmetry indicator topological invariants. Enabled by crystalline inversion symmetry, these indicators allow us to short-cut the ca…
Exceptional Topological Insulators
M. Michael Denner, Anastasiia Skurativska, Frank Schindler +4
We introduce the exceptional topological insulator (ETI), a non-Hermitian topological state of matter that features exotic non-Hermitian surface states which can only exist within…
Antichiral states in twisted graphene multilayers
M. Michael Denner, J. L. Lado, Oded Zilberberg
The advent of topological phases of matter revealed a variety of observed boundary phenomena, such as chiral and helical modes found at the edges of two-dimensional (2D) topologica…