Ground State and Its Topological Properties of Three-Dimensional Spin-Orbit Coupled Degenerate Fermi Gases  

作　　者：Long Xiong Ming Gong Zhao-Xiang Fang Rui Sun 

机构地区：[1]International Center for Quantum Materials,School of Physics,Peking University,Beijing 100871,China [2]Key Lab of Quantum Information of Chinese Academy of Sciences,School of Physics,University of Science and Technology of China,Hefei 230026,China [3]Synergetic Innovation Center of Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China [4]School of Physical Science and Technology,Xinjiang University,Urumqi 830046,China [5]College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China

出　　处：《Chinese Physics Letters》2023年第12期143-148,共6页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61805162,11774328,and 12274005);the National Key Research and Development Program of China(Grant No.2021YFA1401900)。

摘　　要：Three-dimensional(3D)degenerate Fermi gases in the presence of spin-orbit coupling,inducing various kinds of physical findings and phenomena,have attracted tremendous attention in these years.We investigate the 3D spin-orbit coupled degenerate Fermi gases in theory and first present the analytic expression of their ground state.Our study provides an innovative perspective into understanding of the topological properties of 3D unconventional superconductors,and describes the topological phase transitions in trivial and topological phase areas.Further,such a system is provided with a richer set of Cooper pairings than traditional superconductors.The dual Cooper pairs with same spin directions emerge and exhibit peculiar behaviors,leading to topological phase transitions.Our study and discussion can be generalized to some other types of unconventional superconductors and areas of optical lattices.

关 键 词：FERMI TOPOLOGICAL DEGENERATE 

分 类 号：O469[理学—凝聚态物理]