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Enhanced ultrasonic attenuation of Tl-Ca-Ba-Cu-O at the superconducting transition (1990)

Sun, K. J. ; Winfree, W. P. ; Xu, M.-F. ; [et al.]

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Publication Date: 2011-08-19

Description: Temperature-dependent ultrasonic attenuation measurements have been performed on polycrystalline samples of Tl-Ca-Ba-Cu-O at various frequencies. An attenuation anomaly was observed close to the superconducting transition temperature T(c) (103 K) whose temperature position was frequency-independent. The attenuation decreased exponentially with temperature in the superconducting state for both transverse and longitudinal waves. It was also found that the temperature-dependent sound velocity showed a slope change around T(c).

Keywords: SOLID-STATE PHYSICS

Type: Physical Review B, 3rd Series (ISSN 0163-1829); 42; 2569-257

Format: text

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