arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1503.08254cond-mat.str-elcond-mat.mes-hall
收藏

螺旋Majorana模与螺旋Luttinger液体之间的调谐

Tunneling between helical Majorana modes and helical Luttinger liquids

Sung-Po Chao, Thomas L. Schmidt, Chung-Hou Chung

摘要:

我们提出并研究了螺旋Majorana模和相互作用的螺旋Luttinger液体之间的单量子点接触和双量子点接触的电荷输运。我们发现,较强的排斥相互作用和点接触成为绝缘以上的临界相互作用强度的微分电导降低。对于单点接触,微分电导作为偏置电压的函数,示出了一系列的峰值,由于Andreev反射的电子在马约拉纳模式。在两点接触的情况下,干涉现象使得各个共振峰的结构不那么普遍,并且显示出接触之间具有不同分离距离的调制。对于小的分离距离,整体特征保持类似于单点接触的情况。

英文摘要:

We propose and study the charge transport through single and double quantum point contacts setup between helical Majorana modes and an interacting helical Luttinger liquid. We show that the differential conductance decreases for stronger repulsive interactions and that the point contacts become insulating above a critical interaction strength. For a single point contact, the differential conductance as a function of bias voltage shows a series of peaks due to Andreev reflection of electrons in the Majorana modes. In the case of two point contacts, interference phenomena make the structure of the individual resonance peaks less universal and show modulations with different separation distance between the contacts. For small separation distance the overall features remain similar to the case of a single point contact.

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。

↑