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Zoekopdracht: journal id: "physicalxreviewxb"

AuteursA. Hubener, M. Snoek, W. Hofstetter
TitelMagnetic phases of two-component ultracold bosons in an optical lattice
TijdschriftPhysical Review B
Jaargang80
Jaar2009
Nummer24
Pagina's245109-
ISSN10980121
FaculteitFaculteit der Natuurwetenschappen, Wiskunde en Informatica
Instituut/afd.FNWI: Institute for Theoretical Physics (ITF)
SamenvattingWe investigate spin-order of ultracold bosons in an optical lattice by means of dynamical mean-field theory. A rich phase diagram with anisotropic magnetic order is found, both for the ground state and at finite temperatures. Within the Mott insulator, a ferromagnetic to antiferromagnetic transition can be tuned using a spin-dependent optical lattice. In addition we find a supersolid phase, in which superfluidity coexists with antiferromagnetic spin order. We present detailed phase diagrams at finite temperature for the experimentally realized heteronuclear 87Rb-41K mixture in a three-dimensional optical lattice.
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