Impurity phases of superfluid 3He in aerogel

W. P. Halperin*, G. Gervais, K. Yawata, N. Mulders

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

Discovery of impurity phases of superfluid 3He, produced by silica aerogel, provides a new approach to investigate the effect of disorder on unconventional pairing. A simple model that assumes homogeneous, isotropic scattering is in agreement with experiment including suppression of the superfluid transition temperature, the amplitude of the order parameter, and phase diagram of magnetic field, temperature, and pressure, with the feature that the polycritical point vanishes in a 98% porous aerogel. We also find a metastable equal-spin-pairing state in zero field although such a phase does not exist in equilibrium.

Original languageEnglish (US)
Pages (from-to)288-291
Number of pages4
JournalPhysica B: Condensed Matter
Volume329-333
DOIs
StatePublished - May 2003
EventProceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: Aug 20 2002Aug 27 2002

Keywords

  • Aerogel
  • He
  • Impurity scattering
  • Superfluid

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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