CMT116

Thermodynamic properties of thin films of superfluid ³He-A

• Author(s): A. B. Vorontsov and J. A. Sauls
• Address: Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208
• Date: April 2, 2003
• Journal: Physical Reivew B 68, 064508 (2003) [DOI] [PDF]

• Abstract:
  The pairing correlations in superfluid ³He are strongly modified by quasiparticle scattering off a surface or an interface. We present theoretical results and predictions for the order parameter, the quasiparticle excitation spectrum and the free energy for thin films of superfluid ³He. Both specular and diffuse scattering by a substrate are considered, while the free surface is assumed to be a perfectly reflecting specular boundary. The results are based on self-consistent calculations of the order parameter and quasiparticle excitation spectrum at zero pressure. We obtain new results for the phase diagram, free energy, entropy and specific heat of thin films of superfluid ³He.
  
• Comment: 13 pages and 12 figures

• Eprint: [PDF] [arXiv]

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