Structure and superfluidity of4Hefilms on plated graphite
作者:
J. Nye´ki,
R. Ray,
G. Sheshin,
V. Maidanov,
V. Mikheev,
B. Cowan,
J. Saunders,
期刊:
Low Temperature Physics
(AIP Available online 1997)
卷期:
Volume 23,
issue 5
页码: 379-388
ISSN:1063-777X
年代: 1997
DOI:10.1063/1.593382
出版商: AIP
数据来源: AIP
摘要:
The results of an experimental study using torsional oscillators of the superfluidity of4Hefilms adsorbed on hydrogen plated graphite are reported. The evolution of superfluidity with the growth of the film shows considerable structure arising from the atomic layering of the film. There is evidence that the superfluidity of a single fluid layer is strongly suppressed, possibly due to the influence of the periodic potential arising from the underlying solid layer. The behavior of two fluid layers is quite distinct, but shows similarities to that of thicker films on heterogeneous substrates; we suggest that the usual theory of the superfluidity of two-dimensional4Heshould be extended to account for superfluid onset temperatures in such a film. ©1997 American Institute of Physics.
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