Nonlocal Coulomb drag in Weyl semimetals

被引：2
作者：
Baum, Yuval [1 ,2 ]
Stern, Ady [1 ]
机构：
[1] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel
[2] CALTECH, Dept Phys, Inst Quantum Informat & Matter, Pasadena, CA 91125 USA
来源：
PHYSICAL REVIEW B | 2017年 / 95卷 / 07期
基金：
欧洲研究理事会;
关键词：
TOPOLOGICAL DIRAC SEMIMETAL; QUASI-PARTICLE INTERFERENCE; SURFACE FERMI ARCS; ULTRAHIGH MOBILITY; TRANSPORT; MAGNETORESISTANCE; DISCOVERY;
D O I：
10.1103/PhysRevB.95.075141
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nonlocality is one of the most striking signatures of the topological nature of Weyl semimetals. We propose to probe the nonlocality in these materials via a measurement of a magnetic-field-dependent Coulomb drag between two sheets of graphene which are separated by a three-dimensional slab of Weyl semimetal. We predict amechanism of Coulomb drag, based on cyclotron orbits that are split between opposite surfaces of the semimetal. In the absence of impurity scattering between different Weyl nodes, this mechanism does not decay with the thickness of the semimetal.
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页数：8
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