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Electronic and Optical Properties of Conjugated Polymers$
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William Barford

Print publication date: 2013

Print ISBN-13: 9780199677467

Published to Oxford Scholarship Online: May 2013

DOI: 10.1093/acprof:oso/9780199677467.001.0001

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Interacting electrons

Interacting electrons

Chapter:
(p.65) 5 Interacting electrons
Source:
Electronic and Optical Properties of Conjugated Polymers
Author(s):

William Barford

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199677467.003.0005

This chapter begins to describe the role of electron-electron interactions in determining the electronic states of conjugated polymers. Broken symmetries and correlation functions of the groundstate are first described, before a discussion of the various types of excited states in neutral systems. These include excitons and magnons. The valence bond method is used to explain the character of the excited states in the strong-coupling limit.

Keywords:   broken symmetries, correlation functions, Mott-Hubbard insulator, Heisenberg antiferromagnet, valence bond method

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