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arXiv · 1801.05345

Orbitropic Effect in Superfluid $^3$He B-phase boundaries

M. Arrayás·R. Haley·G. R. Pickett·D. E. Zmeev
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Abstract

In this work we study the influence of orbital viscosity on the dynamics of the order parameter texture in the superfluid B-phase of $^3$He near a moving bounda ry. Based on the redistribution of thermal quasiparticles within the texture, we develop a model which bestows a significant effective mass on the interface, an d gives a new mechanism for friction as the boundary moves. We have tested the model against existing data of a moving A-B interface whose motion was controlled using magnetic field. The model allows some predictions in experimental situations which involve texture rearrangement due to the B-phase boundary motion.

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M. Arrayás, R. Haley, G. R. Pickett, D. E. Zmeev. 2018-01-16. Orbitropic Effect in Superfluid $^3$He B-phase boundaries. https://doi.org/10.1038/s41598-018-31407-4

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