Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 71
... dimerization , since there is no effect of U alone in first order [ 2.167 ] . A real space renormalization group approach [ 2.185 ] combines both analytical and numerical techniques . In Fig . 2.26 we show for the Hubbard model the ...
... dimerization , since there is no effect of U alone in first order [ 2.167 ] . A real space renormalization group approach [ 2.185 ] combines both analytical and numerical techniques . In Fig . 2.26 we show for the Hubbard model the ...
Page 77
... dimerization , one cannot assume that e - e interactions are weak . Secondly , since e - e interactions enhance the dimerization at fixed ( small ) 2 , it is possible to fit the observed bond alternation with a much weaker electron ...
... dimerization , one cannot assume that e - e interactions are weak . Secondly , since e - e interactions enhance the dimerization at fixed ( small ) 2 , it is possible to fit the observed bond alternation with a much weaker electron ...
Page 109
... dimerization amplitude [ 2.11 , 393 ] . One may thus wonder whether the dimerization survives quantum fluctuations at all . Both numerical and analytical calculations [ 2.161-163 , 394–397 ] show that the long - range order of the ...
... dimerization amplitude [ 2.11 , 393 ] . One may thus wonder whether the dimerization survives quantum fluctuations at all . Both numerical and analytical calculations [ 2.161-163 , 394–397 ] show that the long - range order of the ...
Contents
Introduction | 1 |
An Overview of the Theory of лConjugated Polymers | 7 |
7 | 65 |
Copyright | |
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Common terms and phrases
A.J. Heeger atoms Baeriswyl band band gap behaviour bipolarons bond alternation bond lengths calculations chain charged solitons Chem chemical shift cis-(CH conducting polymers configuration conjugated polymers Coulomb interactions 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 Hamiltonian Hartree-Fock hopping Hubbard model Hückel inter-chain kink lattice Lett linewidth magnetic Metals molecular molecules neutral solitons nonlinear nonlinear optical nuclear observed obtained one-dimensional optical absorption optical gap parameter peak Peierls Peierls-Hubbard model phonon Phys polarons polyacetylene polyenes polypyrrole polythiophene properties proton quantum quasi-particles Raman relaxation resonance Sect shown in Fig Solid State Commun spectra spectrum spin density SSH model structure susceptibility symmetry Synth temperature theoretical theory trans trans-(CH trans-polyacetylene transition triplet valence bond values Vardeny