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NLO Coefficients of Polyenes: Size and Alternation Dependence
Abstract The static polarizability and second hyperpolarizability of N-site polyenes are found for noninteracting (Hückel) and interacting (Pariser-Parr-Pople) chains with alternating transfer integrals t(1 ± δ). Saturation with increasing N is shown to depend on δ > 0 and contributions from unlinked clusters are shown to cancel. Reduced NLO coefficients are introduced to compare electron-electron correlations in cuantum cell models with identical optical gaps Eg, rather than identical δ.
NLO Coefficients of Polyenes: Size and Alternation Dependence
Abstract The static polarizability and second hyperpolarizability of N-site polyenes are found for noninteracting (Hückel) and interacting (Pariser-Parr-Pople) chains with alternating transfer integrals t(1 ± δ). Saturation with increasing N is shown to depend on δ > 0 and contributions from unlinked clusters are shown to cancel. Reduced NLO coefficients are introduced to compare electron-electron correlations in cuantum cell models with identical optical gaps Eg, rather than identical δ.
NLO Coefficients of Polyenes: Size and Alternation Dependence
Scos, Z. G. (Autor:in) / Hayden, G. W. (Autor:in) / McWilliams, P. C. M. (Autor:in)
01.01.1990
14 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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