Abstract
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.
基金项目
国家自然科学基金(61405058)
国家自然科学基金(62075059)
湖南省自然科学基金(2017JJ2048)
湖南省自然科学基金(2020JJ4161)
湖南省教育厅科研项目(21A0013)
Open Project of the State Key Laboratory of Advanced Optical Communication Systems and Networks of China(2024GZKF20)
Guangdong Basic and Applied Basic Research Foundation(2024A1515011353)
维普
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