Localization of bosonic atoms by fermionic impurities in a 3d optical lattice

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dc.creatorOspelkaus, S.
dc.creatorOspelkaus, C.
dc.creatorWille, O.
dc.creatorSucco, M.
dc.creatorErnst, P.
dc.creatorSengstock, K.
dc.creatorBongs, K.
dc.date2006-04-06
dc.date.accessioned2026-07-07T07:05:20Z
dc.date.available2026-07-07T07:05:20Z
dc.descriptionWe observe a localized phase of ultracold bosonic quantum gases in a 3-dimensional optical lattice induced by a small contribution of fermionic atoms acting as impurities in a Fermi-Bose quantum gas mixture. In particular we study the dependence of this transition on the fermionic 40K impurity concentration by a comparison to the corresponding superfluid to Mott insulator transition in a pure bosonic 87Rb gas and find a significant shift in the transition parameter. The observed shift is larger than expected based on a mean-field argument, which is a strong indication that disorder-related effects play a significant role.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0604179
dc.identifierhttp://arxiv.org/abs/cond-mat/0604179
dc.identifierPhys. Rev. Lett. 96, 180403 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.180403
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109633
dc.subjectStatistical Mechanics
dc.subjectStrongly Correlated Electrons
dc.titleLocalization of bosonic atoms by fermionic impurities in a 3d optical lattice
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