Ground state properties of a two-dimensional Fermi superfluid with anisotropic spin-orbit coupling
文献类型：期刊论文
| 作者 | Zhou, Kezhao; Zhang, Zhidong |
| 刊名 | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 128页码:207-210 |
| ISSN号 | 0022-3697 |
| 关键词 | BCS-BEC crossover Spin-orbit coupling Ultra-cold atom |
| DOI | 10.1016/j.jpcs.2017.08.019 |
| 通讯作者 | Zhou, Kezhao(kezhaozhou@gmail.com) ; Zhang, Zhidong(zdzhang@imr.ac.cn) |
| 英文摘要 | In this study, we performed a theoretical investigation of the ground state properties of a two-dimensional ultra cold Fermi superfluid with anisotropic spin-orbit coupling (SOC). In the absence of the Zeeman field, the system evolved from a weak coupling BCS regime to a strongly interacting BEC regime (BCS-BEC crossover) with increases in either the two-particle interaction strength or the SOC parameters. We focused on the behaviors of the pairing parameter and density of states (DOS) when the anisotropic parameter of the SOC increased. Surprisingly, we discovered that the gap parameter decreased as the anisotropic parameters increased, but the DOS at the Fermi surface exhibited non-monotonic behavior as a function of the anisotropic parameter. In the presence of the Zeeman field, we considered a particular type of topological phase transition by obtaining the analytical result for the topological invariant and we related this directly to the quantum phase transition with a sudden change in the ground state wave-function. The effects of higher partial wave pairing terms on this topological phase transition were also considered in this study. |
| 资助项目 | National Key R&D Program of China[2017YFA0206302] ; National Natural Science Foundation of China[51331006] ; National Natural Science Foundation of China[51590883] ; National Natural Science Foundation of China[11204321] ; Chinese Academy of Sciences[KJZD-EW-M05-3] |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000472693100021 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences |
| 源URL | [http://ir.imr.ac.cn/handle/321006/134088]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhou, Kezhao; Zhang, Zhidong |
| 作者单位 | Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Kezhao,Zhang, Zhidong. Ground state properties of a two-dimensional Fermi superfluid with anisotropic spin-orbit coupling[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2019,128:207-210. |
| APA | Zhou, Kezhao,&Zhang, Zhidong.(2019).Ground state properties of a two-dimensional Fermi superfluid with anisotropic spin-orbit coupling.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,128,207-210. |
| MLA | Zhou, Kezhao,et al."Ground state properties of a two-dimensional Fermi superfluid with anisotropic spin-orbit coupling".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 128(2019):207-210. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。