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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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