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arXiv 1901.07652cond-mat.supr-concond-mat.mes-hall
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反常非局域电导作为手征Majorana边缘态的指纹

Anomalous Nonlocal Conductance as a Fingerprint of Chiral Majorana Edge States

Satoshi Ikegaya, Yasuhiro Asano, Dirk Manske

摘要:

手征$p$波超导体是手征马约拉纳边态拓扑系统的主要例子。虽然候选材料存在,手性马约拉纳边缘状态的结论性签名尚未在实验中观察到。在这里,我们提出了一个吸烟枪实验检测的手征马约拉纳边缘状态的基础上的非局域电导的理论结果在一个设备组成的手征$p$波超导体和两个铁磁导线。马约拉纳边缘态的手征性质导致这些结中的长距离和手征敏感的非局域输运。这两个显著的特征使我们能够在单个实验装置中确定手征Majorana边缘态的移动方向。

英文摘要:

Chiral $p$-wave superconductor is the primary example of topological systems hosting chiral Majorana edge states. Although candidate materials exist, the conclusive signature of chiral Majorana edge states has not yet been observed in experiments. Here we propose a smoking-gun experiment to detect the chiral Majorana edge states on the basis of theoretical results for the nonlocal conductance in a device consisting of a chiral $p$-wave superconductor and two ferromagnetic leads. The chiral nature of Majorana edge states causes an anomalously long-range and chirality-sensitive nonlocal transport in these junctions. These two drastic features enable us to identify the moving direction of chiral Majorana edge states in the single experimental setup.

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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