Spin transport in a graphene normal-superconductor junction in the quantum Hall regime

被引：4
|
作者：
Sekera, Tibor [1 ]
Bruder, Christoph [1 ]
Tiwari, Rakesh P. [2 ]
机构：
[1] Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland
[2] McGill Univ, Dept Phys, 3600 Rue Univ, Montreal, PQ H3A 2T8, Canada
来源：
PHYSICAL REVIEW B | 2018年 / 98卷 / 19期
基金：
瑞士国家科学基金会;
关键词：
D O I：
10.1103/PhysRevB.98.195418
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The quantum Hall regime of graphene has many unusual properties. In particular, the presence of a Zeeman field opens up a region of energy within the zeroth Landau level, where the spin-up and spin-down states localized at a single edge propagate in opposite directions. We show that when these edge states are coupled to an s-wave superconductor, the transport of charge carriers is spin-filtered. This spin-filtering effect can be traced back to the interplay of specular Andreev reflections and Andreev retro-reflections in the presence of a Zeeman field.
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收藏
页数：5
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