Experimental Demonstration of Topological Surface States Protected by Time-Reversal Symmetry
文献类型：期刊论文
| 作者 | Zhang, T ; Cheng, P ; Chen, X ; Jia, JF ; Ma, XC ; He, K ; Wang, LL ; Zhang, HJ ; Dai, X ; Fang, Z ; Xie, XC ; Xue, QK |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2009 |
| 卷号 | 103期号:26 |
| ISSN号 | 0031-9007 |
| 关键词 | HGTE QUANTUM-WELLS SINGLE DIRAC CONE INSULATOR CORRALS BI2TE3 PHASE |
| 通讯作者 | Zhang, T: Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China. |
| 中文摘要 | We report direct imaging of standing waves of the nontrivial surface states of topological insulator Bi(2)Te(3) using a scanning tunneling microscope. The interference fringes are caused by the scattering of the topological states off Ag impurities and step edges on the Bi(2)Te(3)(111) surface. By studying the voltage-dependent standing wave patterns, we determine the energy dispersion E(k), which confirms the Dirac cone structure of the topological states. We further show that, very different from the conventional surface states, backscattering of the topological states by nonmagnetic impurities is completely suppressed. The absence of backscattering is a spectacular manifestation of the time-reversal symmetry, which offers a direct proof of the topological nature of the surface states. |
| 资助信息 | NSFC; National Basic Research Program of China |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37775]  |
| 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, T,Cheng, P,Chen, X,et al. Experimental Demonstration of Topological Surface States Protected by Time-Reversal Symmetry[J]. PHYSICAL REVIEW LETTERS,2009,103(26). |
| APA | Zhang, T.,Cheng, P.,Chen, X.,Jia, JF.,Ma, XC.,...&Xue, QK.(2009).Experimental Demonstration of Topological Surface States Protected by Time-Reversal Symmetry.PHYSICAL REVIEW LETTERS,103(26). |
| MLA | Zhang, T,et al."Experimental Demonstration of Topological Surface States Protected by Time-Reversal Symmetry".PHYSICAL REVIEW LETTERS 103.26(2009). |
入库方式： OAI收割
来源：物理研究所
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