Finite-temperature phase diagram of a polarized fermi gas in an optical lattice

T. K. Koponen*, T. Paananen, J. P. Martikainen, P. Törmä

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

84 Citations (Scopus)

Abstract

We present phase diagrams for a polarized Fermi gas in an optical lattice as a function of temperature, polarization, and lattice filling factor. We consider the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO), Sarma or breached pair, and BCS phases, and the normal state and phase separation. We show that the FFLO phase appears in a considerable portion of the phase diagram. The diagrams have two critical points of different nature. We show how various phases leave clear signatures to momentum distributions of the atoms which can be observed after time of flight expansion.

Original languageEnglish
Article number120403
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Volume99
Issue number12
DOIs
Publication statusPublished - 19 Sep 2007
MoE publication typeA1 Journal article-refereed

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