Elastic Properties of Polycrystalline Solid Helium

被引：18
作者：
Maris, Humphrey J. [1 ]
Balibar, Sebastien [2 ,3 ]
机构：
[1] Brown Univ, Dept Phys, Providence, RI 02912 USA
[2] Ecole Normale Super, Phys Stat Lab, F-75231 Paris 05, France
[3] CNRS, F-75231 Paris 05, France
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 2010年 / 160卷 / 1-2期
基金：
欧洲研究理事会; 美国国家科学基金会;
关键词：
Solid helium; Supersolid; SHEAR MODULUS; HCP HE-4; SUPERSOLIDITY; CONSTANTS;
D O I：
10.1007/s10909-010-0173-8
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Recent experiments have shown that the shear modulus of solid helium undergoes a large temperature variation in the range 20 to 200 mK, possibly due to changes in the pinning of dislocations. In this note we report on computer simulations of the elastic properties of polycrystalline solid helium. We calculate how the elastic coefficients of a sample made up of a large number of randomly oriented grains are affected by the changes in the shear modulus c (44) of the individual grains.
引用
收藏
页码：5 / 11
页数：7
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