Nonlinearity in the kapitza resistance between gold and superfluid 4he near tॕ

R. Duncan, G. Ahlers

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We report experimental results for the thermal boundary resistance RK between gold and superfluid 4He which were obtained by using thermometry with three-nanokelvin resolution. The data imply that RK is singular at the superfluid transition temperature Tॕ. For t蠁1-T/Tॕ\lesssim10-4, RK becomes noticeably dependent on the heat flux Q used to make the measurement. The reduced temperature tc at which this nonlinear resistance is first observed is approximately proportional to Q. For t蠄tc dRK/dQ is approximately proportional to 1/t.

Original languageEnglish
Pages (from-to)363
Number of pages1
JournalJapanese Journal of Applied Physics
Volume26
Issue numberS3-1
DOIs
StatePublished - Jan 1987

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