马约拉纳零模自旋方向上的隐蔽天芒

IF 2.6 4区物理与天体物理 Q2 PHYSICS, APPLIED International Journal of Modern Physics B Pub Date : 2024-02-29 DOI:10.1142/s0217979225500055

Xin Shang, Huimin Tang

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引用次数: 0

摘要

马约拉纳零模（Majorana zero mode，MZM）的自旋信息在区分 MZM 与其他零能态方面具有重要的应用价值。我们研究了局域在拓扑超导体涡旋态中的马约拉纳零模（MZM）的自旋方向。我们发现 MZM 磁结构的拓扑数为零。然而，随着漩涡半径的增加，电子的磁结构在反漩涡和天漩涡之间摆动（从反漩涡开始），而空穴的磁结构则在天漩涡和反漩涡之间摆动（从天漩涡开始）。电子的总磁场结构是反磁子（拓扑数为-1），而空穴的总磁场结构是天磁子（拓扑数为 1）。我们希望这些新特征能为 MZM 的探测和调控提供更多特征。

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Hidden skyrmion on the spin direction of the Majorana zero mode

The spin information of Majorana zero mode (MZM) has important application value in distinguishing MZM from other zero energy states. We study the spin direction of the Majorana zero mode (MZM) localized in a vortex state in a topological superconductor. We find that the topological number of the magnetic structure of the MZM is zero. However, with an increase in the vortex radius, the magnetic structure of the electron oscillates between the antiskyrmion and skyrmion (starting with the antiskyrmion), while that of the hole oscillates between the skyrmion and antiskyrmion (starting with the skyrmion). The total magnetic structure of the electron is a antiskyrmion (the topological number is −1) while that of the hole is a skyrmion (the topological number is 1). We hope these new features provide more characters for detection and regulation of MZM.

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来源期刊

International Journal of Modern Physics B 物理-物理：凝聚态物理

CiteScore

3.70

自引率

11.80%

发文量

417

审稿时长

3.1 months

期刊介绍： Launched in 1987, the International Journal of Modern Physics B covers the most important aspects and the latest developments in Condensed Matter Physics, Statistical Physics, as well as Atomic, Molecular and Optical Physics. A strong emphasis is placed on topics of current interest, such as cold atoms and molecules, new topological materials and phases, and novel low dimensional materials. One unique feature of this journal is its review section which contains articles with permanent research value besides the state-of-the-art research work in the relevant subject areas.