Sep, 2006
Generic phase diagram of Fermion superfluids with population imbalance
PHYSICAL REVIEW LETTERS
- ,
- ,
- Volume
- 97
- Number
- 12
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1103/PhysRevLett.97.120407
- Publisher
- AMER PHYSICAL SOC
It is shown by microscopic calculations for trapped imbalanced Fermi superfluids that the gap function always has sign changes, i.e., the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO)-like state, up to a critical imbalance P(c), beyond which normal state becomes stable, at temperature T=0. A temperature-versus-pressure phase diagram is constructed, where the BCS state without sign change is stable only at T not equal 0. We reproduce the observed bimodality in the density profile to identify its origin and evaluate P(c) as functions of T and the coupling strength. These dependencies match with the recent experiments.
- Link information
- ID information
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- DOI : 10.1103/PhysRevLett.97.120407
- ISSN : 0031-9007
- Web of Science ID : WOS:000240680400007