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arXiv 1003.1145cond-mat.mes-hallcond-mat.supr-con
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量子线中的螺旋液体和Majorana束缚态

Helical liquids and Majorana bound states in quantum wires

Yuval Oreg, Gil Refael, Felix von Oppen

摘要:

我们发现,自旋轨道耦合与塞曼场或强相互作用的结合可能会导致单通道量子线中的螺旋液体的形成。在螺旋液体中,具有相反速度的电子具有相反的自旋进动。我们认为,零能量马约拉纳束缚态形成在各种情况下,当导线位于接近传统的s波超导体。当外部磁场、超导能隙或特别是化学势沿导线变化时,就会发生这种情况。我们讨论了实验结果的螺旋液体和马约拉纳束缚态的形成。

英文摘要:

We show that the combination of spin-orbit coupling with a Zeeman field or strong interactions may lead to the formation of a helical liquid in single-channel quantum wires. In a helical liquid, electrons with opposite velocities have opposite spin precession. We argue that zero-energy Majorana bound states are formed in various situations when the wire is situated in proximity to a conventional s-wave superconductor. This occurs when the external magnetic field, the superconducting gap, or, in particular, the chemical potential vary along the wire. We discuss experimental consequences of the formation of the helical liquid and the Majorana bound 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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