Strong-coupling corrections to hard domain walls in superfluid 3He-B

Abstract

Domain walls in superfluid 3He-B have gained renewed interest in light of experimental progress on confining helium in nanofabricated geometries. Here, we study the effect of strong-coupling corrections on domain wall width and interfacial tension by determining self-consistent solutions to spatially-dependent Ginzburg-Landau equations. We find that the formation of domain walls is generally energetically favored in strong coupling over weak coupling. Calculations were performed over a wide range of temperatures and pressures, showing decreasing interface energy with increasing temperature and pressure. This has implications for the observability of such domain walls in 3He-B, which are of both fundamental interest and form the basis for spatially-modulated pair-density wave states, when stabilized by strong confinement.

arXiv comment9 pages, 6 figures, accepted version, includes appendix with alternative Wiman beta parameters

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Cited by in corpus (4)

• Vortex-bound solitons in topological superfluid ${}^3$He
• Surface State Dissipation in Confined 3He-A
• Superfluid phase transition of nanoscale-confined helium-3
• Dimensional crossover of superfluid ${}^3$He in a magnetic field