Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 186
... Raman active . In centrosymmetric crystal structures , Raman activity and infrared activity are mutually exclusive for a given lattice vibration . In other crystal structures a phonon can be simultaneously Raman and infrared active . As ...
... Raman active . In centrosymmetric crystal structures , Raman activity and infrared activity are mutually exclusive for a given lattice vibration . In other crystal structures a phonon can be simultaneously Raman and infrared active . As ...
Page 189
... Raman scattering directly probes even parity vibrations of a chain . Due to the electron - phonon coupling , certain Raman lines are resonantly enhanced for photon energies above the band gap . Therefore resonant Raman scattering is ...
... Raman scattering directly probes even parity vibrations of a chain . Due to the electron - phonon coupling , certain Raman lines are resonantly enhanced for photon energies above the band gap . Therefore resonant Raman scattering is ...
Page 190
... Raman frequencies depend sensitively on the electron - phonon coupling parameter . If a distri- bution P ( 2 ) with a single peak is introduced , then the amplitude mode theory allows one to describe the observed doubly peaked Raman ...
... Raman frequencies depend sensitively on the electron - phonon coupling parameter . If a distri- bution P ( 2 ) with a single peak is introduced , then the amplitude mode theory allows one to describe the observed doubly peaked Raman ...
Contents
Introduction | 1 |
Solitons Polarons and Bipolarons | 36 |
7 | 65 |
Copyright | |
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A.J. Heeger A.R. Bishop atoms Baeriswyl band band gap behaviour bipolarons bond alternation bond lengths calculations chain charge carriers charged solitons Chem chemical shift cis-(CH coefficient conducting polymers configuration conjugated polymers Coulomb interaction coupling Cryst D.K. Campbell defects dependence dimerization discussed dopant doping doping levels e-e interactions electron correlation electron spin electron-electron interactions electron-phonon ENDOR energy excitations exciton experimental finite polyenes frequency function G.L. Baker Hamiltonian Hartree-Fock hopping Hubbard model Hückel inter-chain kink lattice Lett linewidth magnetic Metals molecular neutral solitons nonlinear nuclear observed obtained one-dimensional optical absorption optical gap pair parameters peak Peierls Peierls-Hubbard model phonon Phys polarons polyacetylene polyenes polypyrrole polythiophene properties proton quantum quasi-particles Raman relaxation resonance Sect Solid State Commun soliton spectra spectrum spin density SSH model structure susceptibility symmetry Synth temperature theoretical theory trans-(CH trans-polyacetylene transition triplet valence bond values Vardeny