Formation of a disordered (Glassy) phase in deformed solid 4He in the region of supersolid state

被引：10

作者：

Degtyarev, I. A. ^{[1
]}

Lisunov, A. A. ^{[1
]}

Maidanov, V. A. ^{[1
]}

Rubanskiy, V. Yu. ^{[1
]}

Rubets, S. P. ^{[1
]}

Rudavskii, E. Ya. ^{[1
]}

Rybalko, A. S. ^{[1
]}

Tikhii, V. A. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Verkin Physicotech Inst Low Temp, UA-61103 Kharkov, Ukraine

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2010年 / 111卷 / 04期

关键词：

THERMODYNAMIC PROPERTIES; VACANCIES; TEMPERATURE; EXCITATIONS; PRESSURE; PHONON; HEAT;

D O I：

10.1134/S1063776110100122

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A method has been proposed to create disorder in helium crystals by their deformation immediately during the experiment. Precise measurements of the pressure have been performed at a constant volume in samples of various qualities. It has been revealed that excess pressure, which is characterized by the quadratic temperature dependence typical of the disordered glassy phase and of the dislocation contribution to the pressure, is observed in the deformed crystals along with the phonon contribution to the pressure. The effect is observed in the supersolid-state region and disappears after the careful annealing of the crystals. The ultraslow relaxation of the pressure also characteristic of the glassy phase has been observed in the process of annealing of the crystals. The obtained experimental results have been analyzed in the framework of the dislocation model and the model of two-level tunneling states.

引用

页码：619 / 626

页数：8

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