Abstract
We have performed torsional oscillator measurements of 4He films adsorbed on porous gold and gold preplated with Ar, Ne, D 2 , HD, and H 2 . On all substrates, the superfluid response is similar. The thickness of the nonsuperfluid layer as function of the substrate, however, increases monotonically with the well depth of the atom-substrate interaction potential.
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Csáthy, G.A., Chan, M.H.W. Substrate Dependence of the Superfluid Onset of 4He Films. Journal of Low Temperature Physics 121, 451–458 (2000). https://doi.org/10.1023/A:1017566116961
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DOI: https://doi.org/10.1023/A:1017566116961