Ferromagnetism and manipulation of topological surface states in Bi2Se3 family by 2p light elements

被引：11

作者：

Niu, Chengwang ^{[1
]}

Dai, Ying ^{[1
]}

Zhang, Zhenkui ^{[1
]}

Ma, Yandong ^{[1
]}

Huang, Baibiao ^{[1
]}

机构：

[1] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 25期

基金：

中国国家自然科学基金;

关键词：

SINGLE DIRAC CONE; INSULATORS; BI2TE3;

D O I：

10.1063/1.4729934

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The manipulation effects by doping of 2p light elements X (X = B, C, and N) on topological surface states in V2VI3 (V = Bi and Sb, VI = Se and Te) are systemically explored. Our results unveil that X doping at anion sites can induce magnetic moments and gap opening at the Dirac point. To have a stable magnetic ground state, the dopant 2p states must be sufficiently localized, which closely depends on the X-V bond lengths. The incorporation of 2p dopants paves a promising way of tuning the properties of topological insulators and may find applications in spintronics. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729934]

引用

页数：5

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