Three-dimensional skyrmions in spin-2 Bose-Einstein condensates

Research output: Contribution to journalArticle

Details

Original languageEnglish
Article number055011
Pages (from-to)1-8
JournalNEW JOURNAL OF PHYSICS
Volume20
Issue number5
StatePublished - 2018
MoE publication typeA1 Journal article-refereed

Researchers

Research units

  • Shanghai University
  • Kindai University
  • Amherst College
  • University of Helsinki
  • Monash University
  • University of Jyväskylä

Abstract

We introduce topologically stable three-dimensional skyrmions in the cyclic and biaxial nematic phases of a spin-2 Bose-Einstein condensate. These skyrmions exhibit exceptionally high mapping degrees resulting from the versatile symmetries of the corresponding order parameters. We show how these structures can be created in existing experimental setups and study their temporal evolution and lifetime by numerically solving the three-dimensional Gross-Pitaevskii equations for realistic parameter values. Although the skyrmions are eventually destroyed due to the instability of the underlying magnetic phase, their lifetimes are found to be long enough for experimental detection.

    Research areas

  • Bose-Einstein condensation, skyrmion, spinor condensate

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