Spin-polarized edge modes and snake states in HgTe/CdTe quantum wells under an antisymmetric magnetic field
文献类型：期刊论文
| 作者 | Zhang, YT ; Zhai, F ; Qiao, ZH ; Sun, QF |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:12 |
| 关键词 | TOPOLOGICAL INSULATORS |
| ISSN号 | 1098-0121 |
| 通讯作者 | Zhang, YT (reprint author), Hebei Normal Univ, Coll Phys, Shijiazhuang 050016, Peoples R China. |
| 中文摘要 | We demonstrate the effect of an antisymmetric magnetic field on the edge states in inverted HgTe quantum wells using the Landauer-Buttiker formula coupled with the Green's function technique. At any width of the zero-field region, gapless edge modes appear inside the bulk band gap. By calculating the wave function distribution, we find that (i) for Fermi energies inside the bulk gap, the edge states propagate helically along the sample boundaries as a quantum spin-Hall insulator; and (ii) for Fermi energies outside the bulk gap, a pair of states propagate along the boundaries, while the other pair of "snake states" appear and counterpropagate along the central zero-field region. We show numerically that the edge modes in the latter case are robust against the short-range Anderson disorder. |
| 收录类别 | SCI |
| 资助信息 | NSF-China [11004046, 10974236, 11174252]; Natural Science Foundation of Hebei Province of China [A2010000339, A2012205071] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52943]  |
| 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 | Zhang, YT,Zhai, F,Qiao, ZH,et al. Spin-polarized edge modes and snake states in HgTe/CdTe quantum wells under an antisymmetric magnetic field[J]. PHYSICAL REVIEW B,2012,86(12). |
| APA | Zhang, YT,Zhai, F,Qiao, ZH,&Sun, QF.(2012).Spin-polarized edge modes and snake states in HgTe/CdTe quantum wells under an antisymmetric magnetic field.PHYSICAL REVIEW B,86(12). |
| MLA | Zhang, YT,et al."Spin-polarized edge modes and snake states in HgTe/CdTe quantum wells under an antisymmetric magnetic field".PHYSICAL REVIEW B 86.12(2012). |
入库方式： OAI收割
来源：物理研究所
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