eprintid: 1332993
rev_number: 35
eprint_status: archive
userid: 608
dir: disk0/01/33/29/93
datestamp: 2011-12-10 19:06:06
lastmod: 2021-10-09 23:06:41
status_changed: 2011-12-10 19:06:06
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Parish, MM
creators_name: Marchetti, FM
creators_name: Lamacraft, A
creators_name: Simons, BD
title: Polarized fermi condensates with unequal masses: Tuning the tricritical point
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
keywords: GAS, SUPERCONDUCTIVITY, SUPERFLUIDITY, MOLECULES
note: © 2007 The American Physical Society
abstract: We consider a two-component atomic Fermi gas within a mean-field, single-channel model, where both the mass and population of each component are unequal. We show that the tricritical point at zero temperature evolves smoothly from the BEC to BCS side of the resonance as a function of mass ratio r. We find that the interior gap state proposed by Liu and Wilczek is always unstable to phase separation, while the breached pair state with one Fermi surface for the excess fermions exhibits differences in its density of states and pair correlation functions depending on which side of the resonance it lies. Finally, we show that, when r greater than or similar to 3.95, the finite-temperature phase diagram of trapped gases at unitarity becomes topologically distinct from the equal mass system.
date: 2007-04-20
publisher: AMERICAN PHYSICAL SOC
official_url: http://dx.doi.org/© 2007 The American Physical Society
oa_status: green
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_batch
elements_source: Web of Science
elements_id: 355008
doi: 10.1103/PhysRevLett.98.160402
language_elements: EN
lyricists_name: Parish, Meera
lyricists_id: MPARI66
full_text_status: public
publication: PHYS REV LETT
volume: 98
number: 16
article_number: 160402
issn: 0031-9007
citation:        Parish, MM;    Marchetti, FM;    Lamacraft, A;    Simons, BD;      (2007)    Polarized fermi condensates with unequal masses: Tuning the tricritical point.                   PHYS REV LETT , 98  (16)    , Article 160402.  10.1103/PhysRevLett.98.160402 <https://doi.org/10.1103/PhysRevLett.98.160402>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1332993/1/1332993.pdf