Bilayer superfluidity of fermionic polar molecules: Many-body effects

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.043602· OSTI ID:21544663

Baranov, M A ^[1]; Micheli, A; Ronen, S; Zoller, P ^[1]

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1. Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck (Austria)

We study the BCS superfluid transition in a single-component fermionic gas of dipolar particles loaded in a tight bilayer trap, with the electric dipole moments polarized perpendicular to the layers. Based on the detailed analysis of the interlayer scattering, we calculate the critical temperature of the interlayer superfluid pairing transition when the layer separation is both smaller (dilute regime) and on the order or larger (dense regime) than the mean interparticle separation in each layer. Our calculations go beyond the standard BCS approach and include the many-body contributions resulting in the mass renormalization, as well as additional contributions to the pairing interaction. We find that the many-body effects have a pronounced effect on the critical temperature and can either decrease (in the very dilute limit) or increase (in the dense and moderately dilute limits) the transition temperature as compared to the BCS approach.

• OSTI ID: 21544663
• Journal Information: Physical Review. A, Vol. 83, Issue 4; Other Information: DOI: 10.1103/PhysRevA.83.043602; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
74 ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN GAS
CRITICAL TEMPERATURE
ELECTRIC DIPOLE MOMENTS
FERMIONS
LAYERS
MANY-BODY PROBLEM
MASS RENORMALIZATION
MOLECULES
PAIRING INTERACTIONS
SCATTERING
SUPERFLUIDITY
TRAPPING
DIPOLE MOMENTS
ELECTRIC MOMENTS
INTERACTIONS
PHYSICAL PROPERTIES
RENORMALIZATION
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE