Transverse Acoustic Spectroscopy of Superfluid 3He in Compressed Aerogel

被引:0
作者
P. Bhupathi
B. H. Moon
M. Gonzalez
Y. Lee
机构
[1] University of Florida,Department of Physics
来源
Journal of Low Temperature Physics | 2010年 / 158卷
关键词
Superfluid ; He; Aerogel; 74.70.Tx; 4.25.Ha; 5.20.Hr;
D O I
暂无
中图分类号
学科分类号
摘要
The unique nanoporous structure of aerogel provides a rare opportunity to study the role of anisotropic disorder on an anisotropic superfluid 3He. It has been proposed that uniaxial deformation of compliant aerogel would induce global anisotropy and a few compelling effects of global anisotropy on nature of the superfluid phases have been predicted. We measured high frequency shear acoustic impedance in superfluid 3He at 32 bar in a commercially available 98% porosity aerogel under uniaxial compression. At 5% compression, we found evidence of an A-like phase stabilized in a wider temperature width than the A-like phase in uncompressed aerogel.
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页码:176 / 181
页数:5
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