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Depression of the energy gap at a surface in 3He-B; the evidence from thermal boundary conductance

Lambert, Colin and Guénault, A.M. and Pickett, G. R. (1986) Depression of the energy gap at a surface in 3He-B; the evidence from thermal boundary conductance. Journal of Physics C: Solid State Physics, 19 (17). L351-L356. ISSN 0022-3719

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Abstract

A simple expression for the heat flux between sintered silver powder and 3He-B is derived. The heat flux in the superfluid state is expressed in terms of that in the normal state, without the precise mechanism of heat transfer needing to be specified. A comparison with recent measurements suggests that the energy gap involved is a factor of 0.65 of the bulk value. This implies that the gap is depressed near a boundary and that processes occurring close to the boundary dominate the thermal exchange mechanism.

Item Type: Article
Journal or Publication Title: Journal of Physics C: Solid State Physics
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 58107
Deposited By: ep_importer_pure
Deposited On: 26 Oct 2012 01:49
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:07
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/58107

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