Probing zero modes of a defect in a Kitaev quantum wire
文献类型：期刊论文
| 作者 | Li, SW; Li, ZZ; Cai, CY; Sun, CP
|
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 89期号:13页码:134505 |
| 关键词 | MAJORANA FERMIONS ANYONS SUPERCONDUCTOR COMPUTATION |
| ISSN号 | 1098-0121 |
| 通讯作者 | Li, SW (reprint author), Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China. |
| 英文摘要 | The Kitaev quantum wire (KQW) model with open boundary possesses two Majorana edge modes. When the local chemical potential on a defect site is much higher than that on other sites and than the hopping energy, the electron hopping is blocked at this site. We show that the existence of such a defect on a closed KQW also gives rise to two low-energy modes, which can simulate the edge modes. The energies of the defect modes vanish to zero as the local chemical potential of the defect increase to infinity. We develop a quantum Langevin equation to study the transport of KQW for both open and closed cases. We find that when the lead is contacted with the site beside the defect, we can observe two splitted peaks around the zero-bias voltage in the differential conductance spectrum, whereas if the lead is contacted with the bulk of the quantum wire far from the the defect or the open edges, we cannot observe any zero-bias peak. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516] |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevB.89.134505 |
| 语种 | 英语 |
| WOS记录号 | WOS:000334119300003 |
| 公开日期 | 2015-06-03 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15788]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Li, SW,Li, ZZ,Cai, CY,et al. Probing zero modes of a defect in a Kitaev quantum wire[J]. PHYSICAL REVIEW B,2014,89(13):134505. |
| APA | Li, SW,Li, ZZ,Cai, CY,&Sun, CP.(2014).Probing zero modes of a defect in a Kitaev quantum wire.PHYSICAL REVIEW B,89(13),134505. |
| MLA | Li, SW,et al."Probing zero modes of a defect in a Kitaev quantum wire".PHYSICAL REVIEW B 89.13(2014):134505. |
入库方式： OAI收割
来源：理论物理研究所
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