Heat Capacity Peak in Solid 4He: Effects of Disorder and 3He Impurities

被引：36

作者：

Lin, X. ^{[1
]}

Clark, A. C. ^{[1
]}

Cheng, Z. G. ^{[1
]}

Chan, M. H. W. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 12期

关键词：

HCP HE-4; HELIUM; TEMPERATURE; LIQUID-HE-4; GROWTH;

D O I：

10.1103/PhysRevLett.102.125302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Heat capacity measurements with significantly improved resolution find the presence of a peak in a solid He-4 sample in coexistence with liquid. With improved crystallinity, the peak decreases in height and moves to lower temperature. A hysteretic heat capacity signature consistent with He-3-He-4 phase separation, not detected in an earlier work is clearly observed.

引用

页数：4

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