Abstract
Since the real surface of solids is rather rough, surface phonons are scattered considerably by the surface irregularities. The present authors calculated the frequency and correlation length dependence of the damping rate of surface phonons due to the density fluctuations on solid surfaces in a previous work[1], hereafter referred to I. It is assumed there that the density fluctuation is localized on solid surfaces. In this report we extend I to allow the density fluctuations with finite depth from solid surfaces. The frequency and correlation length dependence of the rate is calculated on the basis of Gaussian distributed density-fluctuation.
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References
T. Nakayama and T. Sakuma: J. appl. Phys. 15, (1975) 2445.
H. Ezawa: Ann. Phys. 67,(1971) 438. In this article, Ezawa named the quantum of elastic waves in a half space “surfons”. Hereafter we use this term for surface phonon.
J. A. Bucaro and L. Flax: J. appl. Phys. 45, (1974) 765.
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© 1976 Plenum Press, New York
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Nakayama, T., Sakuma, T. (1976). Surface Phonon Scattering by Density Fluctuation on Solid Surfaces. In: Challis, L.J., Rampton, V.W., Wyatt, A.F.G. (eds) Phonon Scattering in Solids. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-4271-7_16
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DOI: https://doi.org/10.1007/978-1-4613-4271-7_16
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-4273-1
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