Parish, MM;
Baur, SK;
Mueller, EJ;
Huse, DA;
(2007)
Quasi-one-dimensional polarized fermi superfluids.
PHYS REV LETT
, 99
(25)
, Article 250403. 10.1103/PhysRevLett.99.250403.
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Abstract
We calculate the zero-temperature (T = 0) phase diagram of a polarized two-component Fermi gas in an array of weakly coupled parallel one-dimensional (1D) "tubes" produced by a two-dimensional optical lattice. Increasing the lattice strength drives a crossover from three-dimensional (3D) to 1D behavior, stabilizing the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) modulated superfluid phase. We argue that the most promising regime for observing the FFLO phase is in the quasi-1D regime, where the atomic motion is largely 1D but there is weak tunneling in the other directions that stabilizes long-range order. In the FFLO phase, we describe a phase transition where the quasiparticle spectrum changes from gapless near the 3D regime to gapped in quasi-1D.
| Type: | Article |
|---|---|
| Title: | Quasi-one-dimensional polarized fermi superfluids |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.99.250403 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.99.250403 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | PHASE-SEPARATION, GROUND-STATE, SUPERCONDUCTIVITY, FIELD, GAS, DIAGRAM |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1332991 |
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