Spin-orbit coupling effects on the superfluidity of a Fermi gas in an optical lattice
文献类型：期刊论文
| 作者 | Sun, Q ; Zhu, GB ; Liu, WM ; Ji, AC |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2013 |
| 卷号 | 88期号:6页码:3637 |
| ISSN号 | 1050-2947 |
| 通讯作者 | Sun, Q. (reprint author), Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China |
| 中文摘要 | We investigate the superfluidity of attractive Fermi gas in a square optical lattice with spin-orbit coupling (SOC). We show that the system displays a variety of new features. At half filling, SOC induces a Dirac semimetal and the system undergoes a semimetal-superfluid transition. Near half filling, we find that the superfluidity tends to be suppressed due to the emerging Dirac cones. While for small fillings, SOC can induce a BCS-BEC crossover beyond the conventional attractive Hubbard model, which is characterized by a bound state in the lattices. Moreover, we demonstrate that the superfluid density also exhibits many unusual properties in the lattices. |
| 语种 | 英语 |
| 公开日期 | 2014-01-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57462]  |
| 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 | Sun, Q,Zhu, GB,Liu, WM,et al. Spin-orbit coupling effects on the superfluidity of a Fermi gas in an optical lattice[J]. PHYSICAL REVIEW A,2013,88(6):3637. |
| APA | Sun, Q,Zhu, GB,Liu, WM,&Ji, AC.(2013).Spin-orbit coupling effects on the superfluidity of a Fermi gas in an optical lattice.PHYSICAL REVIEW A,88(6),3637. |
| MLA | Sun, Q,et al."Spin-orbit coupling effects on the superfluidity of a Fermi gas in an optical lattice".PHYSICAL REVIEW A 88.6(2013):3637. |
入库方式： OAI收割
来源：物理研究所
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