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arXiv 2303.05959cond-mat.mes-hallcond-mat.supr-con
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马格努斯效应对马约拉纳零模的影响

Magnus effect on a Majorana zero-mode

G. Lemut, M. J. Pacholski, S. Plugge, C. W. J. Beenakker, I. Adagideli

AI总结:

本文研究了拓扑绝缘体表面涡旋中马约拉纳零模在马格努斯效应下的退禁闭动力学,计算了其初始加速度和逃逸速度,并与数值模拟对比验证。

摘要:

拓扑绝缘体近邻化表面上的超流可以使束缚在涡旋核心作为零模的马约拉纳费米子发生离域化转变。本文研究这种退禁闭的动力学,将其作为马格努斯效应(超流与涡旋中速度场的耦合)的一种表现。对于超导相位绕涡旋±2π的缠绕,马约拉纳费米子的初始加速度为±2v_F^2 K/ħ,方向垂直于库珀对动量K。准粒子以恒定速度从涡旋核心逃逸,我们在半经典近似中计算了这一速度,并与计算机模拟进行了比较。

英文摘要:

A supercurrent on the proximitized surface of a topological insulator can cause a delocalization transition of a Majorana fermion bound to a vortex core as a zero-mode. Here we study the dynamics of the deconfinement, as a manifestation of the Magnus effect (the coupling of the superflow to the velocity field in the vortex). The initial acceleration of the Majorana fermion is $\pm 2v_{\rm F}^2 K/\hbar$, perpendicular to the Cooper pair momentum $K$, for a $\pm 2π$ winding of the superconducting phase around the vortex. The quasiparticle escapes with a constant velocity from the vortex core, which we calculate in a semiclassical approximation and compare with computer simulations.

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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