Mott insulators and correlated superfluids in ultracold Bose-Fermi mixtures

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.043619· OSTI ID:21020786

Hebert, F; Haudin, F; Batrouni, G G ^[1]; Pollet, L ^[2]

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1. INLN, Universite de Nice-Sophia Antipolis, CNRS, 1361 route des Lucioles, 06560 Valbonne (France)
2. Institut fuer Theoretische Physik, ETH Zuerich, CH-8093 (Switzerland)

We study the effects of interaction between bosons and fermions in Bose-Fermi mixtures loaded in an optical lattice. We concentrate on the destruction of a bosonic Mott phase driven by repulsive interaction between bosons and fermions. Once the Mott phase is destroyed, the system enters a superfluid phase where the movements of bosons and fermions are correlated. We show that this phase has simultaneous correlations reminiscent of a conventional superfluid and of a pseudospin density wave order.

• OSTI ID: 21020786
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOM-ATOM COLLISIONS
BOSE-EINSTEIN GAS
BOSONS
CORRELATIONS
DENSITY
FERMI GAS
FERMIONS
HUBBARD MODEL
INTERACTIONS
MIXTURES
OPTICAL MODELS
SUPERFLUIDITY