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:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
23575
Deposited By:
Deposited On:
03 Feb 2009 16:57
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Apr 2020 01:16