PRECISION SPECIFIC-HEAT STUDIES OF THIN SUPERFLUID FILMS

被引：31

作者：

STEELE, LM

YEAGER, CJ

FINOTELLO, D

机构：

[1] Department of Physics, Kent State University, Kent

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.71.3673

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report precision specific-heat measurements for two-dimensional helium films in Anopore membranes and in Millipore filter paper. Above the transition temperature and for films less than a superfluid layer thick, we find a distinct specific-heat peak which can be understood in terms of the Kosterlitz-Thouless vortex unbinding mechanism. Although our results are well described by the planar theory, transition broadening becomes evident for thicker films.

引用

页码：3673 / 3676

页数：4

共 31 条

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