We consider a non-Hermitian (NH) analog of a second-order topological insulator, protected
by chiral symmetry, in the presence of next-nearest-neighbor hopping elements to …

We consider non-Hermitian (NH) analog of a second-order topological insulator, protected
by chiral symmetry, in the presence of second-nearest neighbor hopping elements to …

A prominent feature of some one-dimensional non-Hermitian systems is that all right
eigenstates of the non-Hermitian Hamiltonian are localized in one end of the chain. The …

Spectra of bulk or edges in topological insulators are often made complex by non-
Hermiticity. Here, we show that symmetry protection enables entirely real spectra for both …

We unveil a relevant non-Hermitian symmetry and hence a dual bulk-boundary
correspondence (BBC) from a one-dimensional non-Hermitian Rice-Mele model including …

Non-Hermiticity can alter the topological phases of Hermitian lattices and induce gapped
edge states and in-gap corner states for the topologically trivial structures in Hermitian …

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

We study the characterization and realization of higher-order topological Anderson insulator
(HOTAI) in non-Hermitian systems, where the non-Hermitian mechanism ensures extra …

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

Energy conservation is not valid in non-Hermitian systems with gain/loss or non-reciprocity,
which leads to various extraordinary resonant characteristics. Compared with Hermitian …