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Title: Evolution from BCS to BEC Superfluidity in p-Wave Fermi Gases

Abstract

We consider the evolution of superfluid properties of a three-dimensional p-wave Fermi gas from a weak coupling Bardeen-Cooper-Schrieffer (BCS) to strong coupling Bose-Einstein condensation (BEC) limit as a function of scattering volume. At zero temperature, we show that a quantum phase transition occurs for p-wave systems, unlike the s-wave case where the BCS to BEC evolution is just a crossover. Near the critical temperature, we derive a time-dependent Ginzburg-Landau (GL) theory and show that the GL coherence length is generally anisotropic due to the p-wave nature of the order parameter, and becomes isotropic only in the BEC limit.

Authors:
;  [1]
  1. School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)
Publication Date:
OSTI Identifier:
20776999
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevLett.96.040402; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; BCS THEORY; BOSE-EINSTEIN CONDENSATION; COHERENCE LENGTH; CRITICAL TEMPERATURE; EVOLUTION; FERMI GAS; FERMIONS; GINZBURG-LANDAU THEORY; ORDER PARAMETERS; P WAVES; PHASE TRANSFORMATIONS; S WAVES; SCATTERING; STRONG-COUPLING MODEL; SUPERFLUIDITY; THREE-DIMENSIONAL CALCULATIONS; TIME DEPENDENCE

Citation Formats

Iskin, M., and Melo, C.A.R. sa de. Evolution from BCS to BEC Superfluidity in p-Wave Fermi Gases. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.040402.
Iskin, M., & Melo, C.A.R. sa de. Evolution from BCS to BEC Superfluidity in p-Wave Fermi Gases. United States. doi:10.1103/PhysRevLett.96.040402.
Iskin, M., and Melo, C.A.R. sa de. Fri . "Evolution from BCS to BEC Superfluidity in p-Wave Fermi Gases". United States. doi:10.1103/PhysRevLett.96.040402.
@article{osti_20776999,
title = {Evolution from BCS to BEC Superfluidity in p-Wave Fermi Gases},
author = {Iskin, M. and Melo, C.A.R. sa de},
abstractNote = {We consider the evolution of superfluid properties of a three-dimensional p-wave Fermi gas from a weak coupling Bardeen-Cooper-Schrieffer (BCS) to strong coupling Bose-Einstein condensation (BEC) limit as a function of scattering volume. At zero temperature, we show that a quantum phase transition occurs for p-wave systems, unlike the s-wave case where the BCS to BEC evolution is just a crossover. Near the critical temperature, we derive a time-dependent Ginzburg-Landau (GL) theory and show that the GL coherence length is generally anisotropic due to the p-wave nature of the order parameter, and becomes isotropic only in the BEC limit.},
doi = {10.1103/PhysRevLett.96.040402},
journal = {Physical Review Letters},
number = 4,
volume = 96,
place = {United States},
year = {Fri Feb 03 00:00:00 EST 2006},
month = {Fri Feb 03 00:00:00 EST 2006}
}