Spontaneous magnetic ordering in a ferromagnetic spinor dipolar Bose-Einstein condensate

Yuki Kawaguchi, Hiroki Saito, Kazue Kudo, Masahito Ueda

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

We study the spin dynamics of a spin-1 ferromagnetic Bose-Einstein condensate with magnetic dipole-dipole interaction (MDDI) based on the Gross-Pitaevskii and Bogoliubov theories. We find that various magnetic structures such as checkerboards and stripes emerge in the course of the dynamics due to the combined effects of spin-exchange interaction, MDDI, quadratic Zeeman and finite-size effects, and nonstationary initial conditions. However, the short-range magnetic order observed by the Berkeley group is not fully reproduced in our calculations; the periodicity of the order differs by a factor of 3 and the checkerboard pattern eventually dissolves in the course of time. Possible reasons for the discrepancy are discussed.

Original languageEnglish
Article number043627
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume82
Issue number4
DOIs
Publication statusPublished - 2010 Oct 27
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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