{"title":"Pinning of vortices by impurities in unconventional superconductors","authors":"Chiranjit Mahato, Kun Yang, Amit Ghosal","doi":"10.1103/physrevb.110.094513","DOIUrl":null,"url":null,"abstract":"We carry out a microscopic study of a vortex lattice in a strongly correlated, type-II, <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>d</mi></math>-wave superconductor (SC) using Bogoliubov-de Gennes (BDG) formalism. In weak-coupling theory, a commonly accepted truism is that a vortex binds to an impurity. We demonstrate that in a class of unconventional SCs proximity to a Mott insulator, the binding of a vortex to an impurity depends on relevant parameters. In particular, we illustrate this dependency on the sign of impurity, i.e., attractive or repulsive, as well as doping. We emphasize that this seemingly unanticipated behavior arises from strong correlation effects and is absent in weak-coupling descriptions.","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7000,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review B","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevb.110.094513","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 0
Abstract
We carry out a microscopic study of a vortex lattice in a strongly correlated, type-II, -wave superconductor (SC) using Bogoliubov-de Gennes (BDG) formalism. In weak-coupling theory, a commonly accepted truism is that a vortex binds to an impurity. We demonstrate that in a class of unconventional SCs proximity to a Mott insulator, the binding of a vortex to an impurity depends on relevant parameters. In particular, we illustrate this dependency on the sign of impurity, i.e., attractive or repulsive, as well as doping. We emphasize that this seemingly unanticipated behavior arises from strong correlation effects and is absent in weak-coupling descriptions.
期刊介绍:
Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide.
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