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arXiv 1907.07510cond-mat.supr-con
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利用自旋轨道耦合产生超导涡旋

Generating superconducting vortices via spin-orbit coupling

L. A. B. Olde Olthof, X. Montiel, J. W. A. Robinson, A. I. Buzdin

摘要:

自旋轨道耦合(SOC)在超导体/铁磁体异质结构中起着重要的作用。在这里,我们证明了SOC的结果在\textit{s}波超导体放置在铁磁金属与本征或界面SOC的自发产生的涡旋。通过使用推广的伦敦和Ginzburg-Landau理论,我们计算了各种类型的S/F异质结构在超导临界温度和以下的超导电流振幅。特别是,我们表明,即使在弱SOC的限制,涡-antivortex对是稳定的,并有吸引力的相互作用的旋涡和SOC的作用钉沿S/F接口的旋涡。我们讨论了研究这些现象的关键实验,这将为Abrikosov涡旋记忆的创建提供一个平台。

英文摘要:

Spin-orbit coupling (SOC) is known to play an important role in superconductor/ferromagnet heterostructures. Here we demonstrate that SOC results in the spontaneous generation of vortices in an \textit{s}-wave superconductor placed below a ferromagnetic metal with intrinsic or interfacial SOC. By using the generalized London and Ginzburg-Landau theories, we calculate the supercurrent amplitude in various types of S/F heterostructures at and below the superconducting critical temperature. In particular, we show that even in the limit of weak SOC, vortex-antivortex pairs are stabilized and that an attractive interaction between vortices and SOC act to pin vortices along the S/F interface. We discuss key experiments to investigate these phenomena, which would provide a platform to the creation of Abrikosov vortex memory.

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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