Magnetic phase diagram of a spin-1 condensate in two dimensions with dipole interaction

Journal Article · Tue Dec 01 00:00:00 EST 2009 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.80.224502· OSTI ID:21294539

Kjaell, Jonas A; Essin, Andrew M ^[1]; Moore, Joel E ^[1]

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1. Department of Physics, University of California, Berkeley, California 94720 (United States)

Several new features arise in the ground-state phase diagram of a spin-1 condensate trapped in an optical trap when the magnetic-dipole interaction between the atoms is taken into account along with confinement and spin precession. The boundaries between the regions of ferromagnetic and polar phases move as the dipole strength is varied and the ferromagnetic phases can be modulated. The magnetization of the ferromagnetic phase perpendicular to the field becomes modulated as a helix winding around the magnetic field direction with a wavelength inversely proportional to the dipole strength. This modulation should be observable for current experimental parameters in {sup 87}Rb. Hence the much-sought supersolid state with broken continuous translation invariance in one direction and broken global U(1) invariance, occurs generically as a metastable state in this system as a result of dipole interaction. The ferromagnetic state parallel to the applied magnetic field becomes striped in a finite system at strong dipolar coupling.

• OSTI ID: 21294539
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 80, Issue 22; Other Information: DOI: 10.1103/PhysRevB.80.224502; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
CONDENSATES
COUPLING
FERROMAGNETIC MATERIALS
GROUND STATES
MAGNETIC DIPOLES
MAGNETIC FIELDS
MAGNETIC MOMENTS
MAGNETIZATION
METASTABLE STATES
MODULATION
PHASE DIAGRAMS
RUBIDIUM 87
SPIN
SYMMETRY BREAKING
TRANSITION RADIATION
TRAPPING
TRAPS
U-1 GROUPS
WAVELENGTHS