Topological winding properties of spin edge states in the Kane-Mele graphene model
文献类型：期刊论文
| 作者 | Wang, ZG ; Hao, NN ; Zhang, P |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2009 |
| 卷号 | 80期号:11 |
| 关键词 | QUANTIZED HALL CONDUCTANCE ROOM-TEMPERATURE CHIRAL-SYMMETRY SURFACE LATTICE |
| ISSN号 | 1098-0121 |
| 通讯作者 | Zhang, P (reprint author), Inst Appl Phys & Computat Math, LCP, POB 8009, Beijing 100088, Peoples R China. |
| 中文摘要 | We study the spin edge states in the quantum spin-Hall (QSH) effect on a single-atomic layer graphene-ribbon system with both intrinsic and Rashba spin-orbit couplings. The Harper equation for solving the energies of the spin edge states is derived. The results show that in the QSH phase, there are always two pairs of gapless spin-filtered edge states in the bulk energy gap, corresponding to two pairs of zero points of the Bloch function on the complex-energy Riemann surface (RS). The topological aspect of the QSH phase can be distinguished by the difference of the winding numbers of the spin edge states with different polarized directions cross the holes of the RS, which is equivalent to the Z(2) topological invariance proposed by Kane and Mele [Phys. Rev. Lett. 95, 146802 (2005)]. |
| 收录类别 | SCI |
| 资助信息 | NSFC [10604010, 10534030, 60776063]; National Basic Research Program of China (973 Program) [2009CB929103] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/45987]  |
| 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,Zhang, P. Topological winding properties of spin edge states in the Kane-Mele graphene model[J]. PHYSICAL REVIEW B,2009,80(11). |
| APA | Wang, ZG,Hao, NN,&Zhang, P.(2009).Topological winding properties of spin edge states in the Kane-Mele graphene model.PHYSICAL REVIEW B,80(11). |
| MLA | Wang, ZG,et al."Topological winding properties of spin edge states in the Kane-Mele graphene model".PHYSICAL REVIEW B 80.11(2009). |
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来源：物理研究所
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