Ferromagnetism in a lattice of Bose-Einstein condensates.
We show that an ensemble of spinor Bose-Einstein condensates confined in a one-dimensional optical lattice can undergo a ferromagnetic phase transition and spontaneous magnetization arises due to the magnetic dipole-dipole interaction. This phenomenon is analogous to ferromagnetism in solid state physics, but occurs with bosons instead of fermions.
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Optical Sciences Center, The University of Arizona, Tucson, Arizona 85721, USA.
Zhang
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Meystre
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