Heat Capacity and Superfluid Density of Thin 4He Films on Porous Gold and on H2

Gábor A. Csáthy, Daryl Tulimieri, Jongsoo Yoon, Moses Hung-Wai Chan

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

We report simultaneous measurement of the superfluid density and heat capacity of thin 4He films on porous gold and on gold preplated with H2. The superfluid density shows a crossover from 2D-like to 3D critical behavior for temperatures close to Tc, the transition temperature. On both substrates we observe an unexpected heat capacity signature associated with the superfluid layer well below Tc.

Original languageEnglish (US)
Pages (from-to)4482-4485
Number of pages4
JournalPhysical Review Letters
Volume80
Issue number20
DOIs
StatePublished - Jan 1 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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