Critical Casimir effect in dilute 3He-4He mixture films

被引：14

作者：

Garcia, R ^{[1
]}

Chan, MHW ^{[1
]}

机构：

[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

来源：

PHYSICA B-CONDENSED MATTER | 2000年 / 280卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

Casimir effect; critical fluctuations; finite-size scaling; specific heat;

D O I：

10.1016/S0921-4526(99)01447-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Recently, we have found that He-4 films thin near the lambda point. Based on our measurements, the thinning appears to be caused by the confinement of superfluid order parameter fluctuations in the films. The phenomenon of the thinning is believed to be 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-3-He-4 mixture films. Thinning is found near the new lambda points and the characteristics of the thinning are similar to that found in pure He-4 films. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：55 / 56

页数：2

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