Open AccessTHE EFFECTS OF BOSE ELEMENTARY EXCITATIONS ON THE THERMAL PROPERTIES OF GLASSES AT LOW TEMPERATURES
Author(s) -
Guoliang Wang
Publication year - 1989
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.38.1005
Subject(s) - thermal , condensed matter physics , phenomenological model , specific heat , materials science , nonlinear system , thermal expansion , physics , thermodynamics , quantum mechanics
A phenomenological model of Bose elementary excitations is proposed to explain the anomalous thermal properties of glasses at low temperatures (<1 K), namely, the nonlinear temperature dependence of the specific heat, the temperature In T law of the sound velocity. Wealso predict a negative thermal expansion between 0-1 K.