2014/04/30 by Jibiao Wang, Yanming Che, Leifeng Zhang +1 · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Effective mass (spring–mass system) #Fermi Gamma-ray Space Telescope #Fermi gas #Homogeneous #Pairing #Physics #Quantum #Quantum mechanics #Quantum, superfluid, helium dynamics #Statistical physics #Superconductivity #Ultracold atom #cond-mat.quant-gas #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1038/srep39783
published as Sci. Rep. 7, 39783 (2017) · Major revision from previous version. (5 pages, 4 figures in color)
arxiv created 2016/09/13 · openalex publication_date 2017/01/04 · arxiv updated 2017/02/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract Ultracold two-component Fermi gases with a tunable population imbalance have provided an excellent opportunity for studying the exotic Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states, which have been of great interest in condensed matter physics. However, the FFLO states have not been observed experimentally in Fermi gases in three dimensions (3D), possibly due to their small phase space volume and extremely low temperature required for an equal-mass Fermi gas. Here we explore possible effects of mass imbalance, mainly in a 6 Li– 40 K mixture, on the one-plane-wave FFLO phases for a 3D homogeneous case at the mean-field level. We present various phase diagrams related to the FFLO states at both zero and finite temperatures, throughout the BCS-BEC crossover, and show that a large mass ratio may enhance substantially FFLO type of pairing.