Sound attenuation in the superconducting amorphous alloy ZrTiCuNiBe
E. V. Bezuglyi, A. L. Gaiduk, V. D. Fil, W. L. Johnson, G. Bruls, B. Luethi, B. Wolf, S. V. Zherlitsyn
Abstract
The superconducting energy gap and the parameter of the intensity of electron scattering at two-level systems in amorphous ZrTiCuNiBe are determined from the results of measurements of sound attenuation. The mechanism of adiabatic renormalization of the amplitude of coherent tunneling is used for a quantitative description of the peculiarities of sound absorption in the vicinity of critical temperature.
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