Unique labelling schemes for local modes in lattices
- 1 December 1981
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 14 (12) , 3143-3151
- https://doi.org/10.1088/0305-4470/14/12/012
Abstract
Two procedures are described which together specify a unique point group labelling scheme for the irreducible components of local distortions in crystals. In the first procedure the group operators are factorised into a permutation part and a local (atomic) point group operation. The second depends on dividing the complete shells of atoms into subshells which are invariant under subgroups of the site (permutation) group.Keywords
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