2002/05/15 by Kevin Gross, Kevin A. Gross, Chris P. Search +3 · 1 citation
Physics and Astronomy · #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Ferromagnetism #Ground state #Lattice (music) #Magnetic monopole #Magnetism #Mesoscopic physics #Optical lattice #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Spin ice #Spinor #Strong Light-Matter Interactions #Superfluidity #cond-mat.mes-hall
paper · pdf · doi:10.1103/physreva.66.033603
arxiv created 2002/05/15 · openalex publication_date 2002/09/06 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the ground-state magnetic properties of ferromagnetic spinor Bose-Einstein condensates confined in deep optical lattices. In the Mott-insulator regime, the ``minicondensates'' 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 antiferromagnetic 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.