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Phase diagram of the A and B phases of superfluid He-3 in aerogel.

Brussaard, Peter and Fisher, Shaun N. and Guénault, A.M. and Hale, A. J. and Mulders, N. and Pickett, George R. (2001) Phase diagram of the A and B phases of superfluid He-3 in aerogel. Physical Review Letters, 86 (20). pp. 4580-4583. ISSN 1079-7114

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Abstract

We report the first measurements of the A-B phase transition of superfluid He-3 confined within 98% silica aerogel in high magnetic fields and low temperatures. A disk of aerogel is attached to a vibrating wire resonator. The resonant frequency yields a measure of the superfluid Fraction p,lp of the He-3 within the aerogel. The inferred rho (s)/rho value increases substantially at the A-to-B transition of the confined superfluid, allowing us to map the A-B phase diagram as a function of held and temperature. At 4.8 bars, the B-T transition curve looks very similar to that in bulk with a simple reduction factor of order 0.45 for both transition field and temperature.

Item Type: Article
Journal or Publication Title: Physical Review Letters
Uncontrolled Keywords: superfluid ; helium-3 ; aerogel
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23575
Deposited By: Dr Richard P. Haley
Deposited On: 03 Feb 2009 16:57
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 20:27
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23575

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