Ferromagnetism in a lattice of Bose condensates
arXiv:cond-mat/0106118 · doi:10.1103/PhysRevLett.87.140405
Abstract
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.
4 pages, 2 figures