Journal of Low Temperature Physics

, Volume 162, Issue 3–4, pp 212–225 | Cite as

Vortex Core Contribution to Textural Energy in 3He–B Below 0.4Tc

  • V. B. Eltsov
  • R. de Graaf
  • M. Krusius
  • D. E. Zmeev
Article

Abstract

Vortex lines affect the spatial order-parameter distribution in superfluid 3He–B owing to superflow circulating around vortex cores and due to the interaction of the order parameter in the core and in the bulk as a result of superfluid coherence over the whole volume. The step-like change of the latter contribution at 0.6Tc (at a pressure of 29 bar) signifies the transition from axisymmetric cores at higher temperatures to broken-symmetry cores at lower temperatures. We extended earlier measurements of the core contribution to temperatures below 0.2Tc, in particular searching for a possible new core transition to lower symmetries. As a measuring tool we track the energy levels of magnon condensate states in a trap formed by the order-parameter texture.

Keywords

Superfluid 3He–B Vortices Texture Vortex core transition Magnon condensate Coherent precession 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • V. B. Eltsov
    • 1
  • R. de Graaf
    • 1
  • M. Krusius
    • 1
  • D. E. Zmeev
    • 2
  1. 1.Low Temperature LaboratoryAalto UniversityEspooFinland
  2. 2.School of Physics and AstronomyThe University of ManchesterManchesterUK

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