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arXiv 2407.00628cond-mat.mes-hall
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手性诱导的马约拉纳极化

Chirality-Induced Majorana Polarization

Song Chen, Hua-Hua Fu

AI总结:

本文提出利用手性螺旋分子与s波超导结构耦合来产生马约拉纳零能模,并揭示手性可导致相反的马约拉纳极化,从而通过CISS效应实现探测与调控。

摘要:

在拓扑超导体中实现具有新颖物理特性的马约拉纳费米子,已成为一项关键但困难的任务。在此,我们提出了另一个产生马约拉纳零能模(MZMs)的平台,该平台由单个开放的环状螺旋分子(CHM)与s波超导体(外加磁场)耦合构成,或由互连的CHMs链与相位偏置的s波超导异质结构(无任何磁场)耦合构成。这里实现的MZMs与CHMs中的结构手性密切相关。重要的是,左手性和右手性可能导致完全相反的马约拉纳极化(MP),并且局部MP与手性诱导的自旋极化相关联。这些性质为我们提供了多种有效途径,利用手性诱导自旋选择性(CISS)效应以及手性材料中相关的自旋极化电流来探测和调控MZMs。

英文摘要:

To realize Majorana fermions having novel physical features has been developed as a key while difficult task in topological superconductor. Here we have proposed another platform to generate Majorana zero modes (MZMs), which is constructed by a single opened circular helix molecules (CHM) coupled with a s-wave superconductor (with magnetic field) or by an interlinked-CHMs chain coupled with a phase-bias s-wave superconducting heterostructure (without any magnetic field). The MZMs achieved here are tightly associated with the structural chirality in CHMs. Importantly, the left and right handedness may result in completely opposite Majorana polarization (MP), and the local MP is associated to the chiraliy-induced spin polarization. These properties provides us multiple effective ways to detect and regulate the MZMs by using the chirality-induced spin selectivity (CISS) effect and the related spin-polarized currents in chiral materials.

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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