Helical superconducting edge modes from pseudo-Landau levels in graphene

被引：3
|
作者：
Sabsovich, Daniel [1 ]
Bockrath, Marc W. [2 ]
Shtengel, Kirill [3 ]
Sela, Eran [1 ]
机构：
[1] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel
[2] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[3] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA
来源：
PHYSICAL REVIEW B | 2021年 / 103卷 / 09期
基金：
以色列科学基金会; 美国国家科学基金会;
关键词：
QUANTUM; SUPERCURRENT; FIELDS; STATE; PHASE;
D O I：
10.1103/PhysRevB.103.094513
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We explore Andreev states at the interface of graphene and a superconductor for a uniform pseudomagnetic field. Near the zeroth-pseudo-Landau level, we find a topological transition as a function of applied Zeeman field, at which a gapless helical mode appears. This one-dimensional mode is protected from backscattering as long as intervalley and spin-flip scattering are suppressed. We discuss a possible experimental platform to detect this gapless mode based on strained suspended membranes on a superconductor, in which dynamical strain causes charge pumping.
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页数：11
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