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  On the Influence of Noise on the Density of States and Absorption in Disordered Molecular Systems

Esser, B., & Marlow, F. (1986). On the Influence of Noise on the Density of States and Absorption in Disordered Molecular Systems. Physica Status Solidi B, 137(1), 169-181. doi:10.1002/pssb.2221370119.

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Esser, B.1, Author
Marlow, Frank2, 3, Author              
Affiliations:
1Joint Institute for Nuclear Research, Laboratory of Theoretical Physics, Dubna†, ou_persistent22              
2Sektion Physik der Humboldt-Universität zu Berlin, Bereich 04, ou_persistent22              
3Research Group Marlow, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445612              

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 Abstract: A disordered excitonic system perturbed by the Gauss-Markov noise approximating the exciton-phonon interaction is investigated. The structure of the mass operator is discussed in dependence on the eigenfunctions of the excitonic Hamiltonian. Explicit calculations of the density of states and the imaginary part of the DF ϵ2(ω) are performed for Lorentzian static disorder. The influence of the breaking of the k-selection rule or of fluctuations in the transition matrix elements on the frequency dependence of ϵ2(ω) is considered. Es wird ein ungeordnetes exzitonisches System untersucht in dem ein Gauß-Markov Prozeß die Exziton-Phonon Wechselwirkung approximiert. Die Struktur des Masseoperators wird in Abhängigkeit von den Eigenfunktionen des exzitonischen Hamiltonians diskutiert. Für Lorentz-verteilte statische Unordnung werden die Zustandsdichte und der Imaginärteil der DF ϵ2(ω) explizit berechnet. Der Einfluß der Brechung der k-Auswahlregel oder von Fluktuationen in den Übergangsmatrixelementen auf die Frequenzabhängigkeit in ϵ2(ω) werden betrachtet.

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Language(s): eng - English, deu - German
 Dates: 2006-02-191986-09-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/pssb.2221370119
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Title: Physica Status Solidi B
  Abbreviation : Phys. Status Solidi B
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH Verlag GmbH & Co. KGaA
Pages: - Volume / Issue: 137 (1) Sequence Number: - Start / End Page: 169 - 181 Identifier: ISSN: 0370-1972
CoNE: https://pure.mpg.de/cone/journals/resource/958480240330