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Low‐Temperature Glass Properties from the Energy Spectrum
Author(s) -
Gluzman S.
Publication year - 1991
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221650105
Subject(s) - spectrum (functional analysis) , thermal conductivity , heat capacity , roton , energy spectrum , excitation , fractal , materials science , thermal , specific heat , condensed matter physics , physics , thermodynamics , mathematics , quantum mechanics , superfluidity , mathematical analysis , superfluid helium 4
The low‐temperature behaviour is studied of the heat capacity of different glasses dependent on the elementary excitation spectrum characteristics. The spectrum relation to the “two‐level system” and to the “fractal” properties of glasses is discussed. “Roton” part of the spectrum is shown to play a major role in the processes determining the excessive heat capacity and the thermal conductivity.