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

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...

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Published in:Journal of experimental and theoretical physics 2010-10, Vol.111 (4), p.619-626
Main Authors: Degtyarev, I. A., Lisunov, A. A., Maidanov, V. A., Rubanskiy, V. Yu, Rubets, S. P., Rudavskii, E. Ya, Rybalko, A. S., Tikhii, V. A.
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Language:English
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Classical and Quantum Gravitation
Elementary Particles
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theory
Relativity Theory
Solid State Physics
Solids and Liquids
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container_title Journal of experimental and theoretical physics
container_volume 111
creator Degtyarev, I. A.
Lisunov, A. A.
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Rubanskiy, V. Yu
Rubets, S. P.
Rudavskii, E. Ya
Rybalko, A. S.
Tikhii, V. A.
description 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.
doi_str_mv 10.1134/S1063776110100122
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subjects Classical and Quantum Gravitation
Elementary Particles
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theory
Relativity Theory
Solid State Physics
Solids and Liquids
title Formation of a disordered (Glassy) phase in deformed solid 4He in the region of supersolid state
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