Phase separation and collapse in Bose-Fermi mixtures with a Feshbach resonance

Francesca M. Marchetti, Charles J.M. Mathy, David A. Huse, Meera M. Parish

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

We consider a mixture of single-component bosonic and fermionic atoms with an interspecies interaction that is varied using a Feshbach resonance. By performing a mean-field analysis of a two-channel model, which describes both narrow and broad Feshbach resonances, we find an unexpectedly rich phase diagram at zero temperature: Bose-condensed and non-Bose-condensed phases form a variety of phase-separated states that are accompanied by both critical and tricritical points. We discuss the implications of our results for the experimentally observed collapse of Bose-Fermi mixtures on the attractive side of the Feshbach resonance, and we make predictions for future experiments on Bose-Fermi mixtures close to a Feshbach resonance.

Original languageEnglish (US)
Article number134517
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number13
DOIs
StatePublished - Oct 14 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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