Absorption of longitudinal ultrasound in the high-temperature superconductor Y1.2Ba0.8CuO4−<i>y</i>
А. Г. ИвановPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskL. P. VolkovaPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskO. V. GrigutPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskA. I. PopovichPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskYu. F. RevenkoPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskV. M. SvistunovPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskV. Yu. TarenkovPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskL. T. TsymbalPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskA. N. CherkasovPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
Abstract
The absorption of longitudinal ultrasound is studied experimentally in the high-temperature metal-oxide superconductor Y1.2Ba0.8CuO4−y having a transition temperature Tc = 91 K. It is found that at temperatures close to 150 K, the sound absorption decreases sharply upon a decrease in the temperature, attains a minimum value at 130−140 K, and then begins to increase once again. Another absorption minimum is observed below Tc.
Topics
Identifiers
Citations and references
Cited by 02 references