Giant Rashba-type splitting in molybdenum-driven bands of MoS2/Bi(111) heterostructure

被引：53

作者：

Lee, Kyuhwan ^{[1
]}

Yun, Won Seok ^{[1
]}

Lee, J. D. ^{[1
]}

机构：

[1] DGIST, Dept Emerging Mat Sci, Daegu 711873, South Korea

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

VALLEY POLARIZATION; MOS2;

D O I：

10.1103/PhysRevB.91.125420

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the electronic band structure of the MoS2/Bi(111) heterostructure, for which the supercell calculation is performed due to the lattice mismatch between two structures but the effective primitive cell is recovered by using the band unfolding technique. It is found that the strong molybdenum-bismuth band hybridization together with a generation of the interfacial dipole field induces the giant Rashba-type splitting accompanying the proper spin topology in molybdenum-driven bands at the Gamma point. Similar splittings are also found in the heterostructure with other transition-metal dichalcogenides, i.e., with MoSe2, WS2, and WSe2.

引用

页数：5

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