2008/04/30 by M. Iskin
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Core (optical fiber) #Effective mass (spring–mass system) #Fermi Gamma-ray Space Telescope #Fermion #Physics #Physics of Superconductivity and Magnetism #Population #Quantum mechanics #Quantum, superfluid, helium dynamics #Superfluidity #Thermodynamics #Vortex #cond-mat.other #cond-mat.supr-con
paper · pdf · doi:10.1103/physreva.78.021604
published as Phys. Rev. A 78, 021604(R) (2008) · 4 pages with 3 figures, published PRA version
arxiv created 2008/08/06 · openalex publication_date 2008/08/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We analyze the vortex core states of two-species (mass imbalanced) superfluid fermion mixtures as a function of two-body binding energy in two dimensions. In particular, we solve the Bogoliubov--de Gennes equations for a population balanced mixture of 6Li and 40K atoms at zero temperature. We find that the vortex core is mostly occupied by the light-mass (6Li) fermions and that the core density of the heavy-mass (40K) fermions is highly depleted. This is in contrast with the one-species (mass balanced) mixtures with balanced populations where an equal amount of density depletion is found at the vortex core for both pseudospin components.