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arXiv 2403.04421cond-mat.supr-con
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具有高绕数涡旋的超流电流二极管

Supercurrent diode with high winding vortex

CNR-SPIN(意大利国家研究委员会自旋物理研究所);Okayama University(冈山大学);Dipartimento di Fisica “E. R. Caianiello”, Università di Salerno(萨莱诺大学E.R.卡亚涅洛物理学系);NEST Istituto Nanoscienze-CNR and Scuola Normale Superiore(纳米科学研究所和比萨高等师范学院)

Yuri Fukaya, Maria Teresa Mercaldo, Daniel Margineda, Alessandro Crippa, Elia Strambini, Francesco Giazotto, Carmine Ortix, Mario Cuoco

AI总结:

研究通过涡旋相位纹理调控超流整流并检测非常规涡旋状态

摘要:

非互易超流电流是指超导体中最大无损耗电流依赖于其流动方向。这种不对称性是超导二极管操作的基础,通常与涡旋的存在有关。本文研究了在超导弱连接体中存在不同类型涡旋的超流非互易效应。我们展示了涡旋的绕数、其空间配置以及超导电极的形状如何引导超流整流的符号和幅度。我们提出了一种基于涡旋模式优化整流幅度的一般准则,重点研究了超流第一谐波消失的配置。我们证明超流非互易效应可用于诊断高绕数涡旋并区分不同类型的涡旋性。我们的结果提供了一种通过涡旋相位纹理控制超流整流和检测非常规涡旋状态的工具包。

英文摘要:

Nonreciprocal supercurrent refers to the phenomenon where the maximum dissipationless current in a superconductor depends on its direction of flow. This asymmetry underlies the operation of superconducting diodes and is often associated with the presence of vortices. Here, we investigate supercurrent nonreciprocal effects in a superconducting weak-link hosting distinct types of vortices. We demonstrate how the winding number of the vortex, its spatial configuration, and the shape of the superconducting lead can steer the sign and amplitude of the supercurrent rectification. We identify a general criterion for optimizing the rectification amplitude based on vortex patterns, focusing on configurations where the first harmonic of the supercurrent vanishes. We prove that supercurrent nonreciprocal effects can be used to diagnose high-winding vortex and to distinguish between different types of vorticity. Our results provide a toolkit for controlling supercurrent rectification through vortex phase textures and detecting unconventional vortex states.

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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