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journal id: "physicalxreviewxb"
| Authors | A. Hubener, M. Snoek, W. Hofstetter | | Title | Magnetic phases of two-component ultracold bosons in an optical lattice |
| Journal | Physical Review B |
| Volume | 80 |
| Year | 2009 |
| Issue | 24 |
| Pages | 245109- |
| ISSN | 10980121 |
| Faculty | Faculty of Science |
| Institute/dept. | FNWI: Institute for Theoretical Physics (ITF) |
| 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. |
| Document type | Article |
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