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.
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页数：4
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