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Title: Strongly Interacting Fermi Gases with Density Imbalance

Abstract

We consider density-imbalanced Fermi gases of atoms in the strongly interacting, i.e., unitarity, regime. The Bogoliubov-de Gennes equations for a trapped superfluid are solved. They take into account the finite size of the system, as well as give rise to both phase separation and Fulde-Ferrel-Larkin-Ovchinnikov-type oscillations in the order parameter. We show how radio-frequency spectroscopy reflects the phase separation, and can provide direct evidence of the FFLO-type oscillations via observing the nodes of the order parameter.

Authors:
; ;  [1]
  1. Nanoscience Center, Department of Physics, P.O. Box 35, FIN-40014, University of Jyvaeskylae (Finland)
Publication Date:
OSTI Identifier:
20778825
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevLett.96.110403; (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; ATOMS; EQUATIONS; FERMI GAS; FERMIONS; ORDER PARAMETERS; OSCILLATIONS; RADIOWAVE RADIATION; SPECTROSCOPY; SUPERFLUIDITY; TRAPPING; UNITARITY

Citation Formats

Kinnunen, J., Jensen, L.M., and Toermae, P. Strongly Interacting Fermi Gases with Density Imbalance. United States: N. p., 2006. Web. doi:10.1103/PHYSREVLETT.96.1.
Kinnunen, J., Jensen, L.M., & Toermae, P. Strongly Interacting Fermi Gases with Density Imbalance. United States. doi:10.1103/PHYSREVLETT.96.1.
Kinnunen, J., Jensen, L.M., and Toermae, P. Fri . "Strongly Interacting Fermi Gases with Density Imbalance". United States. doi:10.1103/PHYSREVLETT.96.1.
@article{osti_20778825,
title = {Strongly Interacting Fermi Gases with Density Imbalance},
author = {Kinnunen, J. and Jensen, L.M. and Toermae, P.},
abstractNote = {We consider density-imbalanced Fermi gases of atoms in the strongly interacting, i.e., unitarity, regime. The Bogoliubov-de Gennes equations for a trapped superfluid are solved. They take into account the finite size of the system, as well as give rise to both phase separation and Fulde-Ferrel-Larkin-Ovchinnikov-type oscillations in the order parameter. We show how radio-frequency spectroscopy reflects the phase separation, and can provide direct evidence of the FFLO-type oscillations via observing the nodes of the order parameter.},
doi = {10.1103/PHYSREVLETT.96.1},
journal = {Physical Review Letters},
number = 11,
volume = 96,
place = {United States},
year = {Fri Mar 24 00:00:00 EST 2006},
month = {Fri Mar 24 00:00:00 EST 2006}
}