Disordered Kitaev chains with long-range pairing
文献类型：期刊论文
| 作者 | Cai, Xiaoming |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2017-03-22 |
| 卷号 | 29期号:11 |
| 关键词 | 1d P-wave Superconductor Long-range Pairing Anderson Localization Topological Phase Transition |
| DOI | 10.1088/1361-648X/aa5a39 |
| 文献子类 | Article |
| 英文摘要 | We study the competition of disorder and superconductivity for a generalized Kitaev model in incommensurate potentials. The generalized Kitaev model describes one dimensional spinless fermions with long-range p-wave superconducting pairing, which decays with distance l as a power law similar to 1/l(alpha). We focus on the transition from the topological superconducting phase to the topologically trivial Anderson localized phase, and effects of the exponent a on this phase transition. In the topological superconducting phase, for a system under open boundary condition the amplitude of zero-mode Majorana fermion has a hybrid exponential-algebraic decay as the distance increases from the edge. In the Anderson localized phase, some single particle states remain critical for very strong disorders and the number of critical states increases as alpha decreases. In addition, except for critical disorders, the correlation function always has an exponential decay at the short range and an algebraic decay at the long range. Phase transition points are also numerically determined and the topological phase transition happens earlier at a smaller disorder strength for a system with smaller alpha. |
| WOS关键词 | MAJORANA FERMIONS ; WAVE-FUNCTIONS ; SYSTEMS ; SUPERCONDUCTOR ; LOCALIZATION |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000395755700001 |
| 资助机构 | NSF of China(11374331 ; NSF of China(11374331 ; 11304364 ; 11304364 ; 11534014) ; 11534014) ; NSF of China(11374331 ; NSF of China(11374331 ; 11304364 ; 11304364 ; 11534014) ; 11534014) |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/10876]  |
| 专题 | 武汉物理与数学研究所_理论与交叉研究部 |
| 作者单位 | Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Xiaoming. Disordered Kitaev chains with long-range pairing[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2017,29(11). |
| APA | Cai, Xiaoming.(2017).Disordered Kitaev chains with long-range pairing.JOURNAL OF PHYSICS-CONDENSED MATTER,29(11). |
| MLA | Cai, Xiaoming."Disordered Kitaev chains with long-range pairing".JOURNAL OF PHYSICS-CONDENSED MATTER 29.11(2017). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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