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Vortex Core Contribution to Textural Energy in He-3-B Below 0.4T (c)

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<mark>Journal publication date</mark>02/2011
<mark>Journal</mark>Journal of Low Temperature Physics
Issue number3-4
Number of pages14
Pages (from-to)212-225
Publication StatusPublished
Early online date18/11/10
<mark>Original language</mark>English
EventInternational Symposium on Quantum Fluids and Solids (QFS) - Grenoble, France
Duration: 2/08/20107/08/2010


ConferenceInternational Symposium on Quantum Fluids and Solids (QFS)


Vortex lines affect the spatial order-parameter distribution in superfluid He-3-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 0.6T (c) (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 0.2T (c), 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.