Vortex core contribution to textural energy in 3He-B below 0.4Tc

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 29bar) 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.

13 pages, 10 figures, submitted to proceedings of the QFS2010 conference

References in corpus (5)

• Magnon condensation into Q-ball in 3He-B
• Twisted vortex state
• Twenty years of magnon Bose condensation and spin current superfluidity in 3He-B
• Super Stability of Laminar Vortex Flow in Superfluid 3He-B
• Vortex Multiplication in Applied Flow: the Precursor to Superfluid Turbulence

Cited by in corpus (11)

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• Evolution of room-temperature magnon gas toward coherent Bose-Einstein condensate
• Propagation of self-localised Q-ball solitons in the ${}^3$He universe
• Relaxation of Bose-Einstein Condensates of Magnons in Magneto-Textural Traps in Superfluid ${}^3$He-B
• Measurements of anisotropic mass of magnons confined in a harmonic trap in superfluid ${}^3$He-B
• Mutual friction in superfluid ${}^3$He-B in the low-temperature regime
• Magnon Bose-Einstein condensates: from time crystals and quantum chromodynamics to vortex sensing and cosmology
• Textures of Superfluid 3He-B in Applied Flow and Comparison with Hydrostatic Theory
• Vortex-mediated relaxation of magnon BEC into light Higgs quasiparticles