{"title":"Boundary Effect of Two-Band Superconductors and Its Impact on the Critical Temperature of MgB2 Thin Film","authors":"佳慧 陈","doi":"10.12677/cmp.2022.112006","DOIUrl":null,"url":null,"abstract":"Based on two-band Bogoliubov-de Gennes theory, we study the boundary effect of an interface between two-band superconductor and insulator (or vacuum). New boundary terms are introduced into two-band Ginzburg-Landau free energy, and the characteristic length scale of boundary effect can be estimated. Taking into account this boundary effect, we study the critical temperature dependence of film thickness for magnesium diboride. Our numerical results are in good","PeriodicalId":7382,"journal":{"name":"Advances in Condensed Matter Physics","volume":"1 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Condensed Matter Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.12677/cmp.2022.112006","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
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Abstract
Based on two-band Bogoliubov-de Gennes theory, we study the boundary effect of an interface between two-band superconductor and insulator (or vacuum). New boundary terms are introduced into two-band Ginzburg-Landau free energy, and the characteristic length scale of boundary effect can be estimated. Taking into account this boundary effect, we study the critical temperature dependence of film thickness for magnesium diboride. Our numerical results are in good
期刊介绍：
Advances in Condensed Matter Physics publishes articles on the experimental and theoretical study of the physics of materials in solid, liquid, amorphous, and exotic states. Papers consider the quantum, classical, and statistical mechanics of materials; their structure, dynamics, and phase transitions; and their magnetic, electronic, thermal, and optical properties.
Submission of original research, and focused review articles, is welcomed from researchers from across the entire condensed matter physics community.
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