Linear and nonlinear optical characteristics of the Falicov-Kimball model
Condensed Matter
2009-10-28 v1
Abstract
We calculate the linear and nonlinear optical properties of the Falicov-Kimball model for a mixed-valent system within the self-consistent mean-field approximation. Second-harmonic generation can only occur if the mixed-valent state has a built-in coherence between the itinerant d-electrons and the localized f-holes. By contrast, second-harmonic generation cannot occur for solutions of the model with f-site occupation as a good quantum number. As an experimental test of coherence in mixed-valent compounds we propose a measurement of the dynamic second-order susceptibility.
Keywords
Cite
@article{arxiv.cond-mat/9603202,
title = {Linear and nonlinear optical characteristics of the Falicov-Kimball model},
author = {T. Portengen and Th. Ostreich and L. J. Sham},
journal= {arXiv preprint arXiv:cond-mat/9603202},
year = {2009}
}
Comments
4 pages, 2 PostScript figures, to appear in Physical Review Letters