Off-center impurity in alkali halides: reorientation, electric polarization and pairing to F center. III. Numerical calculations

Details Off-center impurity in alkali halides: reorientation, electric polarization and pairing to F center. III. Numerical calculations Off-center impurity in alkali halides: reorientation, electric polarization and pairing to F center. III. Numerical calculations

2007-10-11

arxiv.org/abs/0710.2334v1

Physics

Chemical Physics

17 pages including 3 tables and 11 figures, all pdf format

Scientific paper

We carried out numerical calculations by an extended-Hueckel program in order to check the analytical results reported in the preceding Part I and Part II. We typically consider alkali halide clusters composed of some tens of constituent atoms to calculate electronic energies under static conditions or versus the displacements of particular atoms. Among other things, the off-center displacement of substitutional Li+ impurity in most alkali halides is evidenced. The trigonometric profile of the rotational barriers is also confirmed for KCl.

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