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arXiv 1301.4433cond-mat.mes-hallcond-mat.quant-gascond-mat.supr-con
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Floquet Majorana费米子在驱动拓扑超导体中的输运特征

Transport signatures of Floquet Majorana fermions in driven topological superconductors

Arijit Kundu, Babak Seradjeh

摘要:

Floquet Majorana费米子是周期性驱动超导体中电子和空穴相等叠加的稳态。我们研究的Floquet Majorana费米子在运输测量的实验签名,并显示,无论是分析和数值,他们的存在是由一个量化的电导总和规则的离散值的铅偏置不同的多个吸收或发射能量在驱动频率的信号。我们还研究了静态无序的影响,发现量子化求和规则对弱无序是鲁棒的。因此,我们提供了一个独特的方式来识别Floquet马约拉纳费米子的拓扑签名。

英文摘要:

Floquet Majorana fermions are steady states of equal superposition of electrons and holes in a periodically driven superconductor. We study the experimental signatures of Floquet Majorana fermions in transport measurements and show, both analytically and numerically, that their presence is signaled by a quantized conductance sum rule over discrete values of lead bias differing by multiple absorption or emission energies at drive frequency. We also study the effects of static disorder and find that the quantized sum rule is robust against weak disorder. Thus, we offer a unique way to identify the topological signatures of Floquet Majorana fermions.

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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