Excitonic condensation for the surface states of topological insulator bilayers
文献类型：期刊论文
| 作者 | Wang, ZG ; Hao, NN ; Fu, ZG ; Zhang, P |
| 刊名 | NEW JOURNAL OF PHYSICS
 |
| 出版日期 | 2012 |
| 卷号 | 14 |
| 关键词 | HGTE QUANTUM-WELLS SINGLE DIRAC CONE BI2TE3 PHASE CU2O GAS |
| ISSN号 | 1367-2630 |
| 通讯作者 | Zhang, P: Inst Appl Phys & Computat Math, LCP, POB 8009, Beijing 100088, Peoples R China. |
| 中文摘要 | We propose a generic topological insulator bilayer (TIB) system to study the excitonic condensation with self-consistent mean-field (SCMF) theory. We show that the TIB system presents the crossover behavior from the Bardeen-Cooper-Schrieffer (BCS) limit to the Bose-Einstein condensation (BEC) limit. Moreover, in comparison with traditional semiconductor systems, we find that for the present system the superfluid property in the BEC phase is more sensitive to electron-hole density imbalance and the BCS phase is more robust. Applying this TIB model to the Bi2Se3-family material, we find that the BEC phase is most likely to be observed in experiment. We also calculate the critical temperature for the Bi2Se3-family TIB system, which is similar to 100 K. More interestingly, one can expect this relative high-temperature excitonic condensation, since our calculated SCMF critical temperature is approximately equal to the Kosterlitz-Thouless transition temperature. |
| 收录类别 | SCI |
| 资助信息 | Natural Science Foundation of China [90921003, 10904005]; National Basic Research Program of China (973 Program) [2009CB929103.] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37753]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang, ZG,Hao, NN,Fu, ZG,et al. Excitonic condensation for the surface states of topological insulator bilayers[J]. NEW JOURNAL OF PHYSICS,2012,14. |
| APA | Wang, ZG,Hao, NN,Fu, ZG,&Zhang, P.(2012).Excitonic condensation for the surface states of topological insulator bilayers.NEW JOURNAL OF PHYSICS,14. |
| MLA | Wang, ZG,et al."Excitonic condensation for the surface states of topological insulator bilayers".NEW JOURNAL OF PHYSICS 14(2012). |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。