Anisotropic superfluidity in the two-species polar Fermi gas

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.063624· OSTI ID:21528947

Renyuan, Liao; Brand, Joachim ^[1]

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1. Institute for Advanced Study and Centre for Theoretical Chemistry and Physics, Massey University, Auckland 0632 (New Zealand)

We study the superfluid pairing in a two-species gas of heteronuclear fermionic molecules with equal density. The interplay of the isotropic s-wave interaction and anisotropic long-range dipolar interaction reveals rich physics. We find that the single-particle momentum distribution has a characteristic ellipsoidal shape that can be reasonably represented by a deformation parameter {alpha} defined similarly to the normal phase. Interesting momentum-dependent features of the order parameter are identified. We calculate the critical temperatures of both the singlet and triplet superfluids, suggesting a possible pairing symmetry transition by tuning the s-wave or dipolar interaction strength.

• OSTI ID: 21528947
• Journal Information: Physical Review. A, Vol. 82, Issue 6; Other Information: DOI: 10.1103/PhysRevA.82.063624; (c) 2010 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ANISOTROPY
CRITICAL TEMPERATURE
DENSITY
FERMI GAS
FERMIONS
MOLECULES
ORDER PARAMETERS
PAIRING INTERACTIONS
S WAVES
SUPERFLUIDITY
SYMMETRY
TRIPLETS
DIMENSIONLESS NUMBERS
INTERACTIONS
MULTIPLETS
PARTIAL WAVES
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE