Thermal conductivity of liquid He-3 in aerogel: A gapless superfluid.

Fisher, Shaun N. and Guénault, A.M. and Mulders, N. and Pickett, George R. (2003) Thermal conductivity of liquid He-3 in aerogel: A gapless superfluid. Physical review letters, 91 (10). p. 105303. ISSN 1079-7114

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Abstract

We have measured the thermal conductivity of liquid He-3 in 98% aerogel at ultralow temperatures. Aerogel introduces disorder on a scale comparable to the superfluid coherence length. At low pressures the liquid in the aerogel shows normal-state behavior with conductivity linear in temperature. At pressures above similar to6 bars the onset of superfluidity suppresses the conductivity and the thermal conductivity again tends towards linear behavior in the very low temperature limit, providing strong evidence that here the liquid He-3 in the aerogel is behaving as a gapless superfluid.

Item Type: Journal Article
Journal or Publication Title: Physical review letters
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 23563
Deposited By: Dr Richard P. Haley
Deposited On: 03 Feb 2009 15:21
Refereed?: Yes
Published?: Published
Last Modified: 22 Jun 2019 02:25
URI: https://eprints.lancs.ac.uk/id/eprint/23563

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