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:
Journal Article
Journal or Publication Title:
Journal of Physics C: Solid State Physics
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
58107
Deposited By:
Deposited On:
26 Oct 2012 00:49
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:07