Loss of memory in 'dirty' superfluid 3He

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

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

The transition between the A and B superfluid phases of 3He is first order, and the A-phase has been known to supercool far into the region where the B-phase is thermodynamically stable. The extent of the supercooling strongly depends on whether the cooling originates from above, or from below the normal-to-superfluid transition. For the latter, the supercooling has a 'memory' of the prior warming history. We have studied the nucleation of the B-phase for pure 3He and for a superfluid constrained to a dilute silica aerogel of 98% porosity. Interestingly, we have found that the nucleation of the aerogel B-phase shows, unlike the pure case, no memory, even though large supercooling of the aerogel A-phase is observed.

Original languageEnglish (US)
Pages (from-to)329-330
Number of pages2
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
  • Nucleation
  • Superfluid He

ASJC Scopus subject areas

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

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