Hemixture films
نویسندگان
چکیده
Recently we have found that He films thin near the lambda point. Based on our measurements, the thining appears to be caused by the confinement of superfluid order parameter fluctuations in the films. The phenomenon of the thinning is believed to analogous to the Casimir effect in electromagnetism where the confinement of electromagnetic fluctuations causes the vacuum layer that separates two metal plates to thin. In this paper, we report the result of an experiment extending our previous study to He-He mixture films. Thinning is found near the new lambda points and the characteristics of the thinning are similar to that found in pure He films.
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