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Zeitschrift für Physik B Condensed Matter
ISSN: 0722-3277 (printed version)
ISSN: 1431-584X (electronic version)
Abstract Volume 100 Issue 3 (1996) pp 401-408
Elastic properties of amorphous solids below 100K
B. E. White Jr., R. O. Pohl
Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY 14853-2501, USA
Received: 12 July 1995
Abstract. We have performed a survey of the available literature on the speed of sound at temperatures above 5K in amorphous solids. We have compared the slope, <beta>, of the linear variation in the speed of sound at these temperatures with the temperature independent internal friction below 10K, Q-10, and find that, empirically, <beta>=0.5Q-10/K. This suggests that the low temperature properties of amorphous solids are connected with their universal behavior at higher temperatures. Additionally, we have extended our survey to crystals with glass-like properties as well as to quasicrystals. We find that the same relationship that exists in amorphous solids between Q-10 and <beta> exists in these solids as well. A model to explain this very general empirical relation does not seem to exist.
PACS: 62.40.+i; 63.20.e; 63.50.+x
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