Srinivasan, R. ; Ramachandran, V. ; Seshadri, A. T. ; Ramadass, G. Ananda (1987) Anomalous behaviour of sound velocity in the high Tc superconductor YBa2Cu3O7 Pramana - Journal of Physics, 29 (6). L603-L609. ISSN 0304-4289
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Official URL: http://www.ias.ac.in/j_archive/pramana/29/6/603-60...
Related URL: http://dx.doi.org/10.1007/BF02845841
Abstract
The longitudinal acoustic wave velocity in YBa2Cu3O7 has been measured in the range 300 to 85 K using the ultrasonic pulse superposition technique. The sound velocity shows a steep drop in its value at 260 K and decreases continuously till the superconducting transition temperature. Below Tc the sound velocity increases steeply. A hysteresis is seen when the experiments are performed during a cooling-warming cycle. The results are compared with recent measurements by Ewertet al on the samples with the same chemical composition.
Item Type: | Article |
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Source: | Copyright of this article belongs to Indian Academy of Sciences. |
Keywords: | High Temperature Superconductivity; Anomalous Behaviour; Sound Velocity; YBa2Cu3O7 |
ID Code: | 57929 |
Deposited On: | 30 Aug 2011 09:03 |
Last Modified: | 18 May 2016 09:09 |
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