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Topological Phase Transition and Eigenstates Localization in a Generalized Non‐Hermitian Su–Schrieffer–Heeger Modelasymmetric couplingeigenstate localizationnon‐Hermitian topological phase transitionsThe topological properties of a generalized non〩ermitian Su–Schrieffer–Heeger model are investigated and it ...
Momentum gaps can generically appear in driven and dissipative (non-Hermitian26,27) systems, implying an intrinsic connection between time topology and non-Hermiticity, unlike space topology for which non-Hermiticity is not generally necessary. Here we demonstrate time-topological states localized at ...
Although implementing QHE, QSHE and QVHE require structures to satisfy different conditions, they have the common feature that the gapless edge states span the band gap when the topological material is nontrivial. With the rapid development of topological phases in quantum systems, they were quickly...
Recently, a few non-Hermitian Floquet systems which still hold the chiral symmetry have been found [41], [42], in which some intriguing features and unexpected novel interface states appear [43]. The topological characters of these system can be described by the generalized topological invariant,...
Non-Hermitian band theory naturally arises in active materials because energy is both consumed and dissipated, resulting in the presence of skin modes and odd viscoelasticity. The full potential of these ideas extends from the fundamental understanding of topology in non-equilibrium systems to applicatio...