Non-Hermitian topology and exceptional-point geometries

K Ding, C Fang, G Ma - Nature Reviews Physics, 2022 - nature.com
Non-Hermitian theory is a theoretical framework used to describe open systems. It offers a
powerful tool in the characterization of both the intrinsic degrees of freedom of a system and …

Topological non-Hermitian skin effect

R Lin, T Tai, L Li, CH Lee - Frontiers of Physics, 2023 - Springer
This article reviews recent developments in the non-Hermitian skin effect (NHSE),
particularly on its rich interplay with topology. The review starts off with a pedagogical …

Non-Hermitian topology in static mechanical metamaterials

A Wang, Z Meng, CQ Chen - Science advances, 2023 - science.org
The combination of broken Hermiticity and band topology in physical systems unveils a
novel bound state dubbed as the non-Hermitian skin effect (NHSE). Active control that …

Observation of geometry-dependent skin effect in non-Hermitian phononic crystals with exceptional points

Q Zhou, J Wu, Z Pu, J Lu, X Huang, W Deng… - Nature …, 2023 - nature.com
Exceptional points and skin effect, as the two distinct hallmark features unique to the non-
Hermitian physics, have each attracted enormous interests. Recent theoretical works reveal …

Non-Hermitian morphing of topological modes

W Wang, X Wang, G Ma - Nature, 2022 - nature.com
Topological modes (TMs) are usually localized at defects or boundaries of a much larger
topological lattice,. Recent studies of non-Hermitian band theories unveiled the non …

Topological phononic metamaterials

W Zhu, W Deng, Y Liu, J Lu, HX Wang… - Reports on Progress …, 2023 - iopscience.iop.org
The concept of topological energy bands and their manifestations have been demonstrated
in condensed matter systems as a fantastic paradigm toward unprecedented physical …

Hybrid skin-topological modes without asymmetric couplings

W Zhu, J Gong - Physical Review B, 2022 - APS
The non-Hermitian skin effect (NHSE) in non-Hermitian lattice systems, associated with a
point gap on the complex energy plane, has attracted great theoretical and experimental …

Non-Hermitian photonic band winding and skin effects: a tutorial

H Wang, J Zhong, S Fan - Advances in Optics and Photonics, 2024 - opg.optica.org
Non-Hermitian band structures have gained considerable attention due to the novel
phenomena not present in their Hermitian counterparts and their connection to various …

Extended state in a localized continuum

W Wang, X Wang, G Ma - Physical Review Letters, 2022 - APS
Bound state in a continuum (BIC) is a spatially confined resonance with its energy
embedded in a continuous spectrum of propagative modes, yet their coupling is prohibited …

Non‐Hermitian Topological Phononic Metamaterials

J Lu, W Deng, X Huang, M Ke, Z Liu - Advanced Materials, 2023 - Wiley Online Library
Non‐Hermitian (NH) physics describes novel phenomena in open systems that allow
generally complex spectra. Introducing NH physics into topological metamaterials, which …