Acoustic properties of glasses at low temperatures and low frequencies |
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| Authors: | M.A. Continentino |
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| Affiliation: | Instituto de Física, Universidade Federal Fluminense, Outeiro de S. João Batista s/n, Caixa Postal 296, 24210 Niterói, RJ, Brazil |
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| Abstract: | We generalize the low temperature expressions for the variation of the sound velocity and sound absorption in glasses due to structural defects for the case of arbitrary frequencies. In case ωτ2 ? 1 our expressions reduce to well known results. |
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