Acoustic studies of YBa2Cu3Ox single crystals
Melik-Shakhnazarov V. A., Mirzoeva I.I., Kvirikashvili T. Sh., Dzharparidze S. K., Naskidashvili I. A., Makarenko I. N., Stishov S. M.
The temperature dependence of the elastic modulus and that of the absorption of low-frequency sound ( ~ 104 Hz) have been studied in YBa2Cu3Ox single crystals over the temperature range 3-250 K. An abrupt change (ΔΛ /Ë~10~4) has been observed in the elastic modulus at the superconducting transition temperature Tc. A maximum in the absorption of sound has been observed at Γ— 120 K.