非厄米趋肤效应的赝磁抑制  

Pseudomagnetic suppression of non-Hermitian skin effect

作　　者：张浩田 Subhaskar Mandal 龙洋 薛昊冉 张柏乐 Hau Tian Teo;Subhaskar Mandal;Yang Long;Haoran Xue;Baile Zhang(Division of Physics and Applied Physics,School of Physical and Mathematical Sciences,Nanyang Technological University,Singapore 637371,Singapore;Department of Physics,The Chinese University of Hong Kong,Hong Kong 999077,China;Centre for Disruptive Photonic Technologies,Nanyang Technological University,Singapore 637371,Singapore)

机构地区：[1]Division of Physics and Applied Physics,School of Physical and Mathematical Sciences,Nanyang Technological University,Singapore 637371,Singapore [2]Department of Physics,The Chinese University of Hong Kong,Hong Kong 999077,China [3]Centre for Disruptive Photonic Technologies,Nanyang Technological University,Singapore 637371,Singapore

出　　处：《Science Bulletin》2024年第11期1667-1673,共7页科学通报（英文版）

基　　金：supported by National Research Foundation Singapore Competitive Research Program (NRF-CRP232019-0007);support from the start-up fund and the direct grant (4053675) of The Chinese University of Hong Kong。

摘　　要：It has recently been shown that the non-Hermitian skin effect can be suppressed by magnetic fields. In this work, using a two-dimensional tight-binding lattice, we demonstrate that a pseudomagnetic field can also lead to the suppression of the non-Hermitian skin effect. With an increasing pseudomagnetic field, the skin modes are found to be pushed into the bulk, accompanied by the reduction of skin topological area and the restoration of Landau level energies. Our results provide a time-reversal invariant route to localization control and could be useful in various classical wave devices that are able to host the non-Hermitian skin effect but inert to magnetic fields.

关 键 词：Non-Hermitian skin effect Pseudomagnetic field NONRECIPROCITY Landau levels 

分 类 号：O469[理学—凝聚态物理]