Magnetic phases of two-component ultracold bosons in an optical lattice
Other Condensed Matter
2009-12-15 v3
Abstract
We 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.
Keywords
Cite
@article{arxiv.0902.2212,
title = {Magnetic phases of two-component ultracold bosons in an optical lattice},
author = {A. Hubener and M. Snoek and W. Hofstetter},
journal= {arXiv preprint arXiv:0902.2212},
year = {2009}
}
Comments
6 pages, 4 figures, revised and published version