Rubanskyi V. Glassy state in solid helium at ultralow temperatures

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0414U005477

Thesis Registration Form

0414U005477.pdf

Applicant for

Specialization

  • 01.04.09 - Фізика низьких температур

11-11-2014

Specialized Academic Board

Д 64.175.02

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

Essay

This dissertation work presents the results of studies of the thermodynamics properties of the solid helium at ultralow temperatures. It is found that in quenched and deformed crystals of 4He the temperature dependence of pressure demonstrates a contribution proportional to T2, which dominates at temperatures T<300 mK. Such a pressure behavior is specific to a glassy state. The contribution of a glassy state was not observed practically in well-annealed samples. An abnormally drastic pressure relaxation in quenched crystals was registered at temperatures close to the melting point.

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Files

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