论文标题

正常散射和Andreev散射的相互作用驱动的多个拓扑转换

Multiple topological transitions driven by the interplay of normal scattering and Andreev scattering

论文作者

Kopasov, A. A., Mel'nikov, A. S.

论文摘要

多个拓扑转变对电子孔激发的影响在全壳临近半导体的纳米线中发现了带有捕获的超导涡流的纳米线,最近证明是在中度纵向磁场上实现Majoraana状态的有希望的平台。这种多种过渡的机制被发现并解释为由壳体和安妮·雷夫(Andreev)反射的相互作用和半导体内部的纹理自旋轨道耦合所控制。在此类Andreev波导中,对新兴传播和主要型evanepe-quasiparticle模式进行了广泛的分析。在实验上,这些模式以电荷和自旋极热传输的特殊性揭示了自己。

The effect of multiple topological transitions for electron-hole excitations is discovered in full shell proximitized semiconducting nanowires with trapped superconducting vortices, recently shown to be a promising platform for the realization of Majorana states at moderate longitudinal magnetic fields. The mechanism of such multiple transitions is uncovered and explained to be governed by the interplay of normal and Andreev reflections from the shell and by the textured spin-orbit coupling inside the semiconductor. The extensive analysis of emerging propagating and Majorana-type evanescent quasiparticle modes in such Andreev waveguides is performed. Experimentally, these modes reveal themselves in peculiarities of charge and spin-polarized heat transport.

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