Strong supercooling and stimulation of the A-B transition in superfluid He3

P. Schiffer, M. T. O'Keefe, M. D. Hildreth, Hiroshi Fukuyama, D. D. Osheroff

Research output: Contribution to journalArticlepeer-review

Abstract

We report the first studies of the A-B transition in superfluid 3He confined by microscopically smooth surfaces. The transition exhibited dramatic supercooling, down to 0.15 Tc. The lifetime τ of the metastable A phase has a temperature dependence consistent with Leggett's "baked Alaska" model based on nucleation by ionizing radiation. Radiation sources near the cryostat strongly reduce the lifetime, but do not alter its temperature dependence, and τ increases with increasing magnetic field in accord with Leggett's model.

Original languageEnglish (US)
Pages (from-to)120-123
Number of pages4
JournalPhysical review letters
Volume69
Issue number1
DOIs
StatePublished - Jan 1 1992

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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