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@article{1161970,
author = {Franta, Daniel and Nečas, David and Zajíčková, Lenka},
article_location = {Oxford},
article_number = {May},
doi = {http://dx.doi.org/10.1016/j.tsf.2013.01.081},
keywords = {Sum rule; Optical constants; Dispersion model},
language = {eng},
issn = {0040-6090},
journal = {Thin Solid Films},
title = {Application of Thomas-Reiche-Kuhn sum rule to construction of advanced dispersion models},
url = {http://dx.doi.org/10.1016/j.tsf.2013.01.081},
volume = {534},
year = {2013}
}
TY - JOUR
ID - 1161970
AU - Franta, Daniel - Nečas, David - Zajíčková, Lenka
PY - 2013
TI - Application of Thomas-Reiche-Kuhn sum rule to construction of advanced dispersion models
JF - Thin Solid Films
VL - 534
IS - May
SP - 432-441
EP - 432-441
PB - Elsevier Science
SN - 00406090
KW - Sum rule
KW - Optical constants
KW - Dispersion model
UR - http://dx.doi.org/10.1016/j.tsf.2013.01.081
L2 - http://dx.doi.org/10.1016/j.tsf.2013.01.081
N2 - The classical f-sum rule is generalized using quantum mechanical Thomas–Reiche–Kuhn sum rule to include nucleonic contribution, i.e. lattice vibrations. The sum rule is formulated for the transition strength function defined as a continuous condensed-matter equivalent of the oscillator strength known for discrete transitions in atomic spectra. The application of such formulated sum rule allows construction of dispersion models containing a fitting parameter directly related to the atomic density of material. The dielectric response expressed using the transition strength function is split into individual contributions such as direct and indirect electronic interband transitions including excitonic effect, excitations of electrons to the high-energy states existing above the conduction band, core-electron excitations and phonon absorption. The presented models reflect understanding of structure of disordered and crystalline materials on the basis of quantum theory of solids. The usual term ‘joint density of states’, that should be used only for electronic transitions in the one-electron approximation, is replaced by the more general term ‘transition density’.
ER -
FRANTA, Daniel, David NEČAS and Lenka ZAJÍČKOVÁ. Application of Thomas-Reiche-Kuhn sum rule to construction of advanced dispersion models. \textit{Thin Solid Films}. Oxford: Elsevier Science, 2013, vol.~534, May, p.~432-441. ISSN~0040-6090. Available from: https://dx.doi.org/10.1016/j.tsf.2013.01.081.
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