We introduce and investigate material junctions as a generic and tunable electronic platform
for the realization of exotic non-Hermitian (NH) topological states of matter, where the NH …

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 the three …

We provide a systematic study of non-Hermitian topologically charged systems. Starting from
a Hermitian Hamiltonian supporting Weyl points with arbitrary topological charge, adding a …

Non-Hermiticity gives rise to distinctive topological phenomena absent in Hermitian systems.
However, connection between such intrinsic non-Hermitian topology and Hermitian topology …

The interplay of topology and non-Hermiticity opens a new avenue for engineering novel
topological matter and generating various unique effects. Here, we demonstrate that the non …

A d-dimensional second-order topological insulator (SOTI) can host topologically protected
(d-2)-dimensional gapless boundary modes. Here, we show that a 2D non-Hermitian SOTI …

Among non-Hermitian systems, pseudo-Hermitian phases represent a special class of
physical models characterized by real energy spectra and the absence of non-Hermitian …

Over the last few years, topological edge modes—excitations that are localized at the
materials' edges, yet that are characterized by a topological invariant defined from the …

There have been considerable efforts devoted to the study of topological phases in certain
non-Hermitian systems that possess real eigenfrequencies in the presence of gain and loss …

Second-order topological insulator (SOTI) is featured with the presence of (d− 2)-
dimensional boundary states in d-dimension systems. The non-Hermiticity induced …