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Quasiparticle Excitations in Polyenes and Polyacetylene

Published online by Cambridge University Press:  25 February 2011

Paul Tavan and
Klaus Schulten
Paul Tavan
Affiliation:
Physik-Department, Technische Universität Müinchen, James-Franck-Straβe, D-8046 Garching, Federal Republic of Germany
Klaus Schulten
Affiliation:
Physik-Department, Technische Universität Müinchen, James-Franck-Straβe, D-8046 Garching, Federal Republic of Germany
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Abstract

We apply the Pariser-Parr-Pople Hamiltonian to study many-electron excitations in polyenes and polyacetylene. The excited singlet states of polyenes, calculated by a multireference double excitation expansion, are classified as quasi-particle excitations, namely as triplet-triplet magnons and particle-hole excitons. From finite polyene spectra we derive approximate dispersion relations for these quasi-particles in the infinite polyene, i.e. polyacetylene.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 109: Symposium K – Nonlinear Optical Properties of Polymers , 1987, 163
Copyright
Copyright © Materials Research Society 1988

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References

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