Spin textures in condensates with large dipole moments

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.063623· OSTI ID:21439524

Huhtamaeki, J A. M. ^[1]; Takahashi, M; Mizushima, T; Machida, K ^[1]; Simula, T P ^[1]

---

1. Department of Physics, Okayama University, Okayama 700-8530 (Japan)

We have solved numerically the ground states of a Bose-Einstein condensate in the presence of dipolar interparticle forces using a semiclassical approach. Our motivation is to model, in particular, the spontaneous spin textures emerging in quantum gases with large dipole moments, such as {sup 52}Cr or Dy condensates, or ultracold gases consisting of polar molecules. For a pancake-shaped harmonic (optical) potential, we present the ground-state phase diagram spanned by the strength of the nonlinear coupling and dipolar interactions. In an elongated harmonic potential, we observe a helical spin texture. The textures calculated according to the semiclassical model in the absence of external polarizing fields are predominantly analogous to previously reported results for a ferromagnetic F=1 spinor Bose-Einstein condensate, suggesting that the spin textures arising from the dipolar forces are largely independent of the value of the quantum number F or the origin of the dipolar interactions.

• OSTI ID: 21439524
• Journal Information: Physical Review. A, Vol. 81, Issue 6; Other Information: DOI: 10.1103/PhysRevA.81.063623; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
74 ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
CHROMIUM 52
COUPLING
DIPOLE MOMENTS
FERROMAGNETISM
GASES
GROUND STATES
HARMONIC POTENTIAL
MOLECULES
NONLINEAR PROBLEMS
PHASE DIAGRAMS
SEMICLASSICAL APPROXIMATION
SPIN
TEXTURE
ANGULAR MOMENTUM
APPROXIMATIONS
CALCULATION METHODS
CHROMIUM ISOTOPES
DIAGRAMS
ENERGY LEVELS
EVEN-EVEN NUCLEI
FLUIDS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
MAGNETISM
NUCLEAR POTENTIAL
NUCLEI
PARTICLE PROPERTIES
POTENTIALS
STABLE ISOTOPES