Abstract
The paper gives an exact calculation of the localized frequencies of substitutional defects in a body-centred cubic lattice by the method of Green's functions and compares it with the approximate calculation carried out after [14]. The exact calculation is based on newly computed Green's functions of a b.c.c. lattice [18]. It is shown how by means of group theory the symmetry of the system can be used both in an approximate and in the exact calculation. Some symmetry relations between Green's functions, which limit the number of functions necessary for numerical calculations, are derived.
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Kunc, K. Localized vibrations of point defects in body-centred cubic lattices. Czech J Phys 15, 883–895 (1965). https://doi.org/10.1007/BF01688671
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DOI: https://doi.org/10.1007/BF01688671