A valence potential model of surface effects in stressed diamond-like crystals
- 8 April 1991
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 3 (14) , 2299-2308
- https://doi.org/10.1088/0953-8984/3/14/009
Abstract
Explicit expressions are derived for the macroscopic and the internal strain in the crystals of the diamond structure with (001) surfaces subject to a stress applied from the sides parallel to the (001) direction. The numerical predictions of the surface relaxation at the ideal (001) surfaces of C, Si, Ge and alpha -Sn crystals are given in terms of the valence force constants already used for the description of the dynamics of the materials. The results are compared with the existing experimental observations.Keywords
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