Local-field correction for an interstitial impurity in a crystal

Publisher:
Optical Society of America
Publication Type:
Journal Article
Citation:
Optics Letters, 2002, 27 (6), pp. 430 - 432
Issue Date:
2002-01
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The local-field correction experienced by an interstitial impurity in a crystal with cubic symmetry is derived by use of a rigorous, self-consistent, semimicroscopic description of spontaneous emission in a microcavity. We compute the local-field factor for various positions of the impurity inside the crystal. Furthermore, we demonstrate that the local-field factor can be computed from a simple electrostatic model as a rapidly converging lattice sum. We show that the agreement between the predictions of this simple model and the rigorous calculations is remarkable, opening the way to a simple, general theory of a local-field effect for an impurity in a crystal with arbitrary symmetry.
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