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Magnetism in a lattice of spinor Bose condensates

Kevin Gross·Chris P. Search·Han Pu·Weiping Zhang·Pierre Meystre
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Abstract

We study the ground state magnetic properties of ferromagnetic spinor Bose-Einstein condensates confined in a deep optical lattices. In the Mott insulator regime, the ``mini-condensates'' at each lattice site behave as mesoscopic spin magnets that can interact with neighboring sites through both the static magnetic dipolar interaction and the light-induced dipolar interaction. We show that such an array of spin magnets can undergo a ferromagnetic or anti-ferromagnetic phase transition under the magnetic dipolar interaction depending on the dimension of the confining optical lattice. The ground-state spin configurations and related magnetic properties are investigated in detail.

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Kevin Gross, Chris P. Search, Han Pu, Weiping Zhang, Pierre Meystre. 2002-05-15. Magnetism in a lattice of spinor Bose condensates. https://doi.org/10.1103/physreva.66.033603

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