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arXiv 2407.20132cond-mat.supr-con
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三带s+is超导体中分数涡旋和域壁的微观性质

Microscopic properties of fractional vortices and domain walls in three-band $s+is$ superconductors

Department of Physics, The Royal Institute of Technology(皇家理工学院物理系);Wallenberg Initiative Materials Science for Sustainability, Department of Physics, The Royal Institute of Technology(瓦伦堡可持续发展材料科学倡议,皇家理工学院物理系)

Igor Timoshuk, Egor Babaev

AI总结:

本文研究了三带s+is超导体中分数涡旋和域壁的微观性质,通过微观模型计算磁场分布和隧道电导,以区分不同类型的涡旋。

摘要:

最近有几项实验观察到在超导体中携带分数磁通量量子的物体。本文提供了一种三带s+is超导体中携带可变分数磁通量量子的涡旋和域壁的微观解,并研究了它们的性质。我们通过完全自洽地处理微观三带Bogoliubov-de-Gennes模型来获得解。这展示了磁场分布的特征模式。微观形式化允许计算隧道电导,这可能用于在扫描隧道显微镜中区分分数涡旋与传统单磁通量子涡旋。

英文摘要:

Several experimental observations of objects carrying fractional flux quanta in superconductors were recently reported. Here, we provide microscopic solutions for vortices carrying a variable fraction of magnetic flux quantum and domain walls in a three-band $s + is$ superconductor and investigate their properties. We obtain solutions in a fully self-consistent treatment of a microscopic three-band Bogoliubov-de-Gennes model. This demonstrates the characteristic patterns for the magnetic field distribution. The microscopic formalism allows for calculating tunneling conductance that may be used to distinguish fractional vortices from conventional single flux quanta vortices in Scanning Tunneling Microscopy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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