Abstract
The surface phonon spectrum has been investigated for a series of crystals with diamond structure for the occurrence of soft modes. Those modes are an indication of a structural phase transition leading to the formation of a new superstructure. Calculations base on a force constant model being fitted to experimental bulk phonon frequencies. The (111) surface of C, Si, Ge and α-Sn is treated by a Green’s function method (for details see [1]). We then studied the influence of the change of surface force constants on the surface phonon dispersion.
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References
W. Goldammer, W. Ludwig, W. Zierau and C. Falter: Surface Sci 141, 139, (1984).
W. Zierau, W. Goldammer, C. FAlter and W. Ludwig: Superlattices and Microstructures 1, 55 (1985).
W. Goldammer, W. Zierau and W. Ludwig, to be published.
E. G. McRae and P.M. Petroff; Surface Sci 147 385 (1984).
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© 1986 Springer-Verlag Berlin Heidelberg
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Goldammer, W., Zierau, W., Ludwig, W. (1986). Surface Phonons and Reconstruction in Diamond Structure Crystals. In: Wallis, R.F., Stegeman, G.I., Tamir, T. (eds) Electromagnetic Surface Excitations. Springer Series on Wave Phenomena, vol 3. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82715-0_9
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DOI: https://doi.org/10.1007/978-3-642-82715-0_9
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