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Published October 1, 1997 | public
Journal Article Open

Low-temperature acoustic characteristics of the amorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5


The temperature dependences of the sound velocity v and attenuation alpha of high-frequency (50–160 MHz) sound in the bulk amorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5 are studied at helium temperatures in the normal and superconducting states. The alloy is characterized by a relatively small constant C determining the intensity of interaction between an elastic wave and two-level systems. The density of states of the latter systems is estimated. The peculiarities in the variation of v during the superconducting transition point to the possibility of a gapless superconductivity in a narrow temperature interval near Tc.

Additional Information

©1997 American Institute of Physics. (Submitted July 22, 1997). Fiz. Nizk. Temp. 23, 1139–1143 (October 1997) The authors are grateful to V.Z. Bengus, E.D. Tabachnikova, and A.S. Bakai for fruitful discussions and to E.A. Masalitin for his assistance in preparing the apparatus.


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