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Kosterlitz-Thouless behavior and scaling in superfluid helium films

✍ Scribed by W.I. Glaberson; H. Chayet; R. Brada

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
166 KB
Volume
194-196
Category
Article
ISSN
0921-4526

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✦ Synopsis

The results of a series of measurements of Kosterlitz-Thouless behavior in helium films are presented. Use is made of high Q piezoelectric crystals so as to probe the phenomena in a single fiat substrate geometry at high frequencies. Variations of the superfluid density and dissipation in the vicinity of the transition were measured. Results are compared with a comprehensive numerical calculation in which finite size scaling effects are explicitly introduced. A consistent picture for the dependence of critical thickness on temperature is obtained.

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