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cond-mat.mes-hall2026
Observation of Erratic Non-Hermitian Skin Effect in Phononic Crystals
Yujian Yuan, Jie Liu, He Gao +3
The erratic non-Hermitian skin effect (ENHSE), emerging from the interplay between disorders and locally nonreciprocal yet globally reciprocal couplings, has reshaped the conventio…
cond-mat.mes-hall2022★ 72 cited
Anomalous Floquet non-Hermitian skin effect in a ring resonator lattice
He Gao, Haoran Xue, Zhongming Gu +6
We present a one-dimensional coupled ring resonator lattice exhibiting a variant of the non- Hermitian skin effect (NHSE) that we call the anomalous Floquet NHSE. Unlike existing a…
cond-mat.mes-hall2020
Non-Hermitian route to higher-order topology in an acoustic crystal
He Gao, Haoran Xue, Zhongming Gu +3
Topological phases of matter are classified based on their Hermitian Hamiltonians, whose real-valued dispersions together with orthogonal eigenstates form nontrivial topology. In t…