Edge States and Topological Phases in One-Dimensional Optical Superlattices
文献类型：期刊论文
| 作者 | Lang, LJ ; Cai, XM ; Chen, S |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2012 |
| 卷号 | 108期号:21 |
| 关键词 | HALL CONDUCTANCE ELECTRONS |
| ISSN号 | 0031-9007 |
| 通讯作者 | Lang, LJ: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We show that one-dimensional quasiperiodic optical lattice systems can exhibit edge states and topological phases which are generally believed to appear in two-dimensional systems. When the Fermi energy lies in gaps, the Fermi system on the optical superlattice is a topological insulator characterized by a nonzero topological invariant. The topological nature can be revealed by observing the density profile of a trapped fermion system, which displays plateaus with their positions uniquely determined by the ration of wavelengths of the bichromatic optical lattice. The butterflylike spectrum of the superlattice system can be also determined from the finite-temperature density profiles of the trapped fermion system. This finding opens an alternative avenue to study the topological phases and Hofstadter-like spectrum in one-dimensional optical lattices. |
| 收录类别 | SCI |
| 资助信息 | NSF of China [11121063, 11174360, 10974234]; 973 grant; MOST |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36320]  |
| 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 | Lang, LJ,Cai, XM,Chen, S. Edge States and Topological Phases in One-Dimensional Optical Superlattices[J]. PHYSICAL REVIEW LETTERS,2012,108(21). |
| APA | Lang, LJ,Cai, XM,&Chen, S.(2012).Edge States and Topological Phases in One-Dimensional Optical Superlattices.PHYSICAL REVIEW LETTERS,108(21). |
| MLA | Lang, LJ,et al."Edge States and Topological Phases in One-Dimensional Optical Superlattices".PHYSICAL REVIEW LETTERS 108.21(2012). |
入库方式： OAI收割
来源：物理研究所
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