Topological Crossover in the Chiral Superconducting d + id Phase at Finite Temperatures

IF 1.4 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
A. G. Groshev, A. K. Arzhnikov
{"title":"Topological Crossover in the Chiral Superconducting d + id Phase at Finite Temperatures","authors":"A. G. Groshev,&nbsp;A. K. Arzhnikov","doi":"10.1134/S0021364024604470","DOIUrl":null,"url":null,"abstract":"<p>The temperature behavior of the topological index <i>C</i><sub>1</sub> of the chiral superconducting <i>d</i> + <i>id</i> phase of a two-dimensional single-band model on a triangular lattice has been studied. It has been found that the temperature dependence of the topological index fundamentally changes at carrier densities, at which the nodal points of the Brillouin zone approach the Fermi contour of the normal phase. It has been shown that the topological index <i>C</i><sub>1</sub> in a wide temperature range is close to <i>C</i><sub>1</sub> = 4 (–2) when the nodal points are located far inside (outside) the Fermi contour. However, when nodal points approach the Fermi contour, these values are maintained only at low temperatures, and values close to <i>C</i><sub>1</sub> = 1 in a wide temperature range. It has been assumed that such a topological crossover in the system under consideration can lead to significant changes in edge states in a similar open-boundary system.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 4","pages":"276 - 280"},"PeriodicalIF":1.4000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024604470.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"JETP Letters","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S0021364024604470","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

The temperature behavior of the topological index C1 of the chiral superconducting d + id phase of a two-dimensional single-band model on a triangular lattice has been studied. It has been found that the temperature dependence of the topological index fundamentally changes at carrier densities, at which the nodal points of the Brillouin zone approach the Fermi contour of the normal phase. It has been shown that the topological index C1 in a wide temperature range is close to C1 = 4 (–2) when the nodal points are located far inside (outside) the Fermi contour. However, when nodal points approach the Fermi contour, these values are maintained only at low temperatures, and values close to C1 = 1 in a wide temperature range. It has been assumed that such a topological crossover in the system under consideration can lead to significant changes in edge states in a similar open-boundary system.

求助全文
约1分钟内获得全文 求助全文
来源期刊
JETP Letters
JETP Letters 物理-物理:综合
CiteScore
2.40
自引率
30.80%
发文量
164
审稿时长
3-6 weeks
期刊介绍: All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信