Zero-field spin splitting in topological quantum wells

被引：1

作者：

Litvinov, V., I ^{[1
]}

机构：

[1] Sierra Nevada Corp, 15245 Alton Pkwy,Suite 100, Irvine, CA 92618 USA

来源：

PHYSICAL REVIEW B | 2018年 / 97卷 / 23期

关键词：

SURFACE; HETEROSTRUCTURES; INSULATORS; SYMMETRY; WURTZITE; STATES;

D O I：

10.1103/PhysRevB.97.235438

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We calculate the zero-magnetic-field spin splitting in quantum wells formed in topologically nontrivial bulk crystals. The momentum-dependent Rashba coefficient is expressed via parameters of the microscopic model of topological insulators. It is shown that the spin-split quantum well electron spectrum contains counterpropagating spin-locked modes. These modes need to be taken into account to distinguish between the contributions to spin polarization originating from helical surface fermions and quantum well states of a bulk crystal.

引用

页数：4

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