Fulde-Ferrell-Like Molecular States in Spin-Orbit Coupled Ultracold Fermi Gases  

作　　者：叶冲 傅立斌 

机构地区：[1]National Laboratory of Science and Technology on Computational Physics,Institute of Applied Physics and Computational Mathematics [2]Graduate School,China Academy of Engineering Physics [3]HEDPS,CAPT,and CICIFSA MoE,Peking University

出　　处：《Communications in Theoretical Physics》2017年第8期255-258,共4页理论物理通讯（英文版）

基　　金：Supported by the National Basic Research Program of China(973 Program)under Grant Nos.2013CBA01502,2013CB834100;the National Natural Science Foundation of China under Grant Nos.11374040,11475027,11575027,11274051,and 11075020

摘　　要：We study the molecular state in three-component Fermi gases with a single impurity of ~6Li immersing in a no-interacting Fermi sea of ^(40)K in the presence of an equal weight combination of Rashba-type and Dresselhaustype spin-orbit coupling. In the region where the Fermi sea has two disjointed Fermi surfaces, we find that there are two Fulde–Ferrell-like molecular states with dominating contributions from the lower helicity branch. Decreasing the scattering length or the spin-orbit coupled Fermi energy, we find the Fulde–Ferrell-like molecular state with small center-of-mass momentum is always energy favored and the other one will suddenly disappear.

关 键 词：spin-orbit coupling 

分 类 号：O469[理学—凝聚态物理]