Vortex core contribution to textural energy in 3He-B below 0.4Tc - Condensed Matter > Other Condensed MatterReportar como inadecuado




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Abstract: Vortex lines affect the spatial order-parameter distribution in superfluid3He-B owing to superflow circulating around vortex cores and due to theinteraction of the order parameter in the core and in the bulk as a result ofsuperfluid coherence over the whole volume. The step-like change of the lattercontribution at 0.6Tc at a pressure of 29bar signifies the transition fromaxisymmetric cores at higher temperatures to broken-symmetry cores at lowertemperatures. We extended earlier measurements of the core contribution totemperatures below 0.2Tc, in particular searching for a possible new coretransition to lower symmetries. As a measuring tool we track the energy levelsof magnon condensate states in a trap formed by the order-parameter texture.



Autor: V.B. Eltsov, R. de Graaf, M. Krusius, D.E. Zmeev

Fuente: https://arxiv.org/







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