3RD-SOUND STUDY OF A LAYERED SUPERFLUID FILM

被引：106

作者：

ZIMMERLI, G ^{[1
]}

MISTURA, G ^{[1
]}

CHAN, MHW ^{[1
]}

机构：

[1] PENN STATE UNIV,DEPT PHYS,UNIV PK,PA 16802

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.68.60

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Isothermal scans of third-sound velocity as a function of He-4 coverage on graphite exhibit pronounced dips with integral layer periodicity. The minimum He-4 coverage on graphite needed to support third sound is nearly three layers. The heat-capacity isotherm exhibits minima at layer completion but there is no noticeable feature related to the onset of superfluidity. High-resolution adsorption isotherms below 1 K show that He-4 film grows layer by layer through at least seven layers.

引用

页码：60 / 63

页数：4

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