Spontaneous decay of TA phonons
- 15 February 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (4) , 2595-2598
- https://doi.org/10.1103/physrevb.31.2595
Abstract
Anharmonic decay of high-energy transverse acoustic (TA) phonons satisfying ħω≫T is studied taking account of the elastic anisotropy of real crystalline solids. Dispersive effects are assumed to be small. We find that the decay rate is very anisotropic. The possibility of observing this anisotropy in a phonon-focusing experiment is discussed.
Keywords
This publication has 17 references indexed in Scilit:
- Spontaneous decay rates of LA phonons in quasi-isotropic solidsPhysical Review B, 1985
- Isotope scattering of large-wave-vector phonons in GaAs and InSb: Deformation-dipole and overlap-shell modelsPhysical Review B, 1984
- Diffusion of nondecaying TA-phononsSolid State Communications, 1983
- Isotope scattering of dispersive phonons in GePhysical Review B, 1983
- Lifetime of high-frequency longitudinal-acoustic phonons in Caat low crystal temperaturesPhysical Review B, 1982
- Spontaneous Decay of High-Frequency Acoustic Phonons in CaPhysical Review Letters, 1981
- Observation of Singular Behavior in the Focusing of Ballistic Phonons in GePhysical Review Letters, 1979
- Decay of High-Frequency Longitudinal PhononsJournal of Applied Physics, 1967
- Effect of anisotropic anharmonicity on acoustic attenuationPhysics Letters, 1966
- In elastic scattering of neutrons by an anharmonic crystal at low temperaturesPhysics Letters, 1965