Role of interactions in 87Rb-40K Bose-Fermi mixtures in a 3d optical lattice

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dc.creatorBest, Th.
dc.creatorWill, S.
dc.creatorSchneider, U.
dc.creatorHackermueller, L.
dc.creatorLuehmann, D. -S.
dc.creatorvan Oosten, D.
dc.creatorBloch, I.
dc.date2008-07-28
dc.date.accessioned2026-07-07T12:44:43Z
dc.date.available2026-07-07T12:44:43Z
dc.descriptionWe investigate the effect of interspecies interaction on a degenerate mixture of bosonic 87Rb and fermionic 40K atoms in a three-dimensional optical lattice potential. Using a Feshbach resonance, the 87Rb-40K interaction is tuned over a wide range. Through an analysis of the 87Rb momentum distribution, we find a pronounced asymmetry between strong repulsion and strong attraction. In the latter case, the Bose-Hubbard parameters are renormalized due to self-trapping, leading to a marked shift in the superfluid to Mott insulator transition with increasing Bose-Fermi interaction.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0807.4504
dc.identifierhttp://arxiv.org/abs/0807.4504
dc.identifierPhys.Rev.Lett.102:030408,2009
dc.identifierdoi:10.1103/PhysRevLett.102.030408
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220867
dc.subjectOther Condensed Matter
dc.titleRole of interactions in 87Rb-40K Bose-Fermi mixtures in a 3d optical lattice
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