Antiferromagnetic and topological states in silicene: A mean field study
文献类型：期刊论文
| 作者 | Liu F(刘峰) ; Liu CC; Yao YG
|
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2015-08 |
| 卷号 | 24期号:8页码:87503 |
| 通讯作者邮箱 | ygyao@bit.edu.cn |
| ISSN号 | 1674-1056 |
| 关键词 | spin-polarized quantum anomalous Hall state silicene antiferromagnetic state |
| 通讯作者 | Yao, YG (reprint author), Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China. |
| 产权排序 | [Liu Feng] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; [Liu Feng; Liu Cheng-Cheng; Yao Yu-Gui] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China |
| 中文摘要 | It has been widely accepted that silicene is a topological insulator, and its gap closes first and then opens again with increasing electric field, which indicates a topological phase transition from the quantum spin Hall state to the band insulator state. However, due to the relatively large atomic spacing of silicene, which reduces the bandwidth, the electron-electron interaction in this system is considerably strong and cannot be ignored. The Hubbard interaction, intrinsic spin orbital coupling (SOC), and electric field are taken into consideration in our tight-binding model, with which the phase diagram of silicene is carefully investigated on the mean field level. We have found that when the magnitudes of the two mass terms produced by the Hubbard interaction and electric potential are close to each other, the intrinsic SOC flips the sign of the mass term at either K or K' for one spin and leads to the emergence of the spin-polarized quantum anomalous Hall state. |
| 类目[WOS] | Physics, Multidisciplinary |
| 分类号 | 二类/Q2 |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | BILAYER GRAPHENE ; HONEYCOMB LATTICE ; TRANSITION |
| 收录类别 | SCI ; EI ; CSCD |
| 原文出处 | http://dx.doi.org/10.1088/1674-1056/24/8/087503 |
| 语种 | 英语 |
| WOS记录号 | WOS:000361906000080 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/58410]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu F,Liu CC,Yao YG. Antiferromagnetic and topological states in silicene: A mean field study[J]. CHINESE PHYSICS B,2015,24(8):87503. |
| APA | Liu F,Liu CC,&Yao YG.(2015).Antiferromagnetic and topological states in silicene: A mean field study.CHINESE PHYSICS B,24(8),87503. |
| MLA | Liu F,et al."Antiferromagnetic and topological states in silicene: A mean field study".CHINESE PHYSICS B 24.8(2015):87503. |
入库方式： OAI收割
来源：力学研究所
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