Emergent Gauge Fields from Curvature in Single Layers of Transition-Metal Dichalcogenides

被引：28

作者：

Ochoa, Hector ^{[1
]}

Zarzuela, Ricardo ^{[1
]}

Tserkovnyak, Yaroslav ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 02期

关键词：

MOS2; SPIN;

D O I：

10.1103/PhysRevLett.118.026801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We analyze the electron dynamics in corrugated layers of transition-metal dichalcogenides. Due to the strong spin-orbit coupling, the intrinsic (Gaussian) curvature leads to an emergent gauge field associated with the Berry connection of the spinor wave function. We discuss the gauge field created by topological defects of the lattice, namely, tetragonal and octogonal disclinations and edge dislocations. Ripples and topological disorder induce the same dephasing effects as a random magnetic field, suppressing the weak localization effects. This geometric magnetic field can be detected in an Aharonov-Bohm interferometry experiment by measuring the local density of states in the vicinity of corrugations.

引用

页数：5

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