Acoustic-Power Dependence of the Sound Velocity in Amorphous PdSi at Very Low Temperatures: Transverse Relaxation Time
- 13 July 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 47 (2) , 106-109
- https://doi.org/10.1103/physrevlett.47.106
Abstract
A sound-velocity variation as a function of the acoustic power is reported. This variation is observed in amorphous PdSi at 10 mK for 500-MHz shear waves. It is shown that the transverse relaxation time of the tunneling defects can be deduced from this effect. A very short value nsec is thus obtained in PdSi. It is then confirmed by a hole-burning experiment.
Keywords
This publication has 12 references indexed in Scilit:
- LOW TEMPERATURE PROPERTIES.LOW-ENERGY EXCITATIONS IN AMORPHOUS METALSLe Journal de Physique Colloques, 1980
- Influence of the Superconducting State upon the Low-Temperature Properties of Metallic GlassesPhysical Review Letters, 1979
- Relaxation of Tunneling Systems by Conduction Electrons in a Metallic GlassPhysical Review Letters, 1978
- Sound propagation in amorphous metallic PdSi at low temperaturesPhysics Letters A, 1977
- Linewidth and anomalous dispersion of ultrasound in glassesJournal de Physique, 1977
- Phonon Echoes in GlassPhysical Review Letters, 1976
- Elastic effects of structural relaxation in glasses at low temperaturesJournal of Non-Crystalline Solids, 1976
- Nonlinear Phonon Propagation in Fused Silica below 1 KPhysical Review Letters, 1973
- Tunneling states in amorphous solidsJournal of Low Temperature Physics, 1972
- Anomalous low-temperature thermal properties of glasses and spin glassesPhilosophical Magazine, 1972