CMT146

Strong-coupling and the Stripe phase of ³He

• Author(s): Joshua J. Wiman and J. A. Sauls
• Address: Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208
• Date: May 3, 2016
• Journal: J. Low Temp. Phys., 184, 1054-1070 (2016) [DOI]
• Abstract: Thin films of superfluid ³He were predicted, based on weak-coupling BCS theory, to have a stable phase which spontaneously breaks translational symmetry in the plane of the film. This crystalline superfluid, or "stripe" phase, develops as a one dimensional periodic array of domain walls separating degenerate B phase domains. We report calculations of the phases and phase diagram for superfluid ³He in thin films using a strong-coupling Ginzburg-Landau theory that accurately reproduces the bulk ³He superfluid phase diagram. We find that the stability of the Stripe phase is diminished relative to the A phase, but the Stripe phase is stable in a large range of temperatures, pressures, confinement, and surface conditions.

• Comment: 9 journal pages; 11 figures

• Eprint: [PDF] [arXiv]

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