{"title":"Energy Localization and Topological Defect in Spherical Non-Hermitian Topolectrical Circuits","authors":"Xizhou Shen, Xiumei Wang, Haotian Guo, Xingping Zhou","doi":"10.1002/andp.202400026","DOIUrl":null,"url":null,"abstract":"<p>This work examines the energy localization in non-Hermitian systems, with a particular focus on the influence of topological defects in spherical models. Alterations in the mode distribution are explored within non-Hermitian Su-Schrieffer-Heeger (SSH) chains affected by these defects, utilizing the Maximum Skin Corner Weight (MaxWSC) metric. An innovative spherical model is introduced, created by segmenting spheres into 1D chain structures, to study the non-Hermitian skin effect (NHSE) within a spherical geometric framework. Experimental validations conducted on Printed Circuit Boards (PCBs) corroborate the theoretical insights. These findings not only substantiate the theoretical approach but also illustrate the capability of engineered circuit systems to mimic complex non-Hermitian phenomena, highlighting the utility of spherical geometries in exploring NHSE and topological phenomena in non-Hermitian systems.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"536 11","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annalen der Physik","FirstCategoryId":"101","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/andp.202400026","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This work examines the energy localization in non-Hermitian systems, with a particular focus on the influence of topological defects in spherical models. Alterations in the mode distribution are explored within non-Hermitian Su-Schrieffer-Heeger (SSH) chains affected by these defects, utilizing the Maximum Skin Corner Weight (MaxWSC) metric. An innovative spherical model is introduced, created by segmenting spheres into 1D chain structures, to study the non-Hermitian skin effect (NHSE) within a spherical geometric framework. Experimental validations conducted on Printed Circuit Boards (PCBs) corroborate the theoretical insights. These findings not only substantiate the theoretical approach but also illustrate the capability of engineered circuit systems to mimic complex non-Hermitian phenomena, highlighting the utility of spherical geometries in exploring NHSE and topological phenomena in non-Hermitian systems.
期刊介绍：
Annalen der Physik (AdP) is one of the world''s most renowned physics journals with an over 225 years'' tradition of excellence. Based on the fame of seminal papers by Einstein, Planck and many others, the journal is now tuned towards today''s most exciting findings including the annual Nobel Lectures. AdP comprises all areas of physics, with particular emphasis on important, significant and highly relevant results. Topics range from fundamental research to forefront applications including dynamic and interdisciplinary fields. The journal covers theory, simulation and experiment, e.g., but not exclusively, in condensed matter, quantum physics, photonics, materials physics, high energy, gravitation and astrophysics. It welcomes Rapid Research Letters, Original Papers, Review and Feature Articles.
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