首页|Hybrid Skin-Topological Effect Induced by Eight-Site Cells and Arbitrary Adjustment of the Localization of Topological Edge States

Hybrid Skin-Topological Effect Induced by Eight-Site Cells and Arbitrary Adjustment of the Localization of Topological Edge States

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Hybrid skin-topological effect(HSTE)in non-Hermitian systems exhibits both the skin effect and topological protection,offering a novel mechanism for localization of topological edge states(TESs)in electrons,circuits,and photons.However,it remains unclear whether the HSTE can be realized in quasicrystals,and the unique structure of quasicrystals with multi-site cells may provide novel localization phenomena for TESs induced by the HSTE.We propose an eight-site cell in two-dimensional quasicrystals and realize the HSTE with eight-site nonreciprocal intracell hoppings.Furthermore,we can arbitrarily adjust the eigenfield distributions of the TESs and discover domain walls associated with effective dissipation and their correlation with localization.We present a new scheme to precisely adjust the energy distribution in non-Hermitian quasicrystals with arbitrary polygonal outer boundaries.

陈健智、史奥芊、彭宇宸、彭鹏、刘建军

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Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education,School of Physics and Electronics,Hunan University,Changsha 410082,China

Greater Bay Area Institute for Innovation,Hunan University,Guangzhou 511300,China

国家自然科学基金国家自然科学基金湖南省自然科学基金湖南省自然科学基金湖南省教育厅科研项目Open Project of the State Key Laboratory of Advanced Optical Communication Systems and Networks of ChinaGuangdong Basic and Applied Basic Research Foundation

61405058620750592017JJ20482020JJ416121A00132024GZKF202024A1515011353

2024

10.1088/0256-307X/41/3/037103

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子：0.515
ISSN：0256-307X
年,卷(期)：2024.41(3)
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