Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 45
... parameter . For small y , the total energy still has two minima as a function of the dimeri- zation parameter ; however they are no longer degenerate . Empirically , the structure of Fig . 2.2a is preferred . Since the two bond ...
... parameter . For small y , the total energy still has two minima as a function of the dimeri- zation parameter ; however they are no longer degenerate . Empirically , the structure of Fig . 2.2a is preferred . Since the two bond ...
Page 59
... parameter is of course the dimensionless e - p coupling parameter 2 , which depends on the bandwidth 4to , the electron - phonon coupling a and the elastic force constant K through ( 2.45 ) . In order to estimate 2 it is important to ...
... parameter is of course the dimensionless e - p coupling parameter 2 , which depends on the bandwidth 4to , the electron - phonon coupling a and the elastic force constant K through ( 2.45 ) . In order to estimate 2 it is important to ...
Page 68
... parameter : a neutral kink in the BOW order parameter introduces a local SDW , whereas a charged kink in the BOW order parameter leads to a local CDW . In the following we shall focus exclusively on the model for trans- ( CH ) , with ...
... parameter : a neutral kink in the BOW order parameter introduces a local SDW , whereas a charged kink in the BOW order parameter leads to a local CDW . In the following we shall focus exclusively on the model for trans- ( CH ) , with ...
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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 coefficient conducting polymers configuration conjugated polymers correlation Coulomb interactions coupling Cryst D.K. Campbell defects dependence dimerization discussed dopant doping doping levels e-e interactions effects electron spin electron-electron interactions electron-phonon ENDOR energy excitations exciton experimental Fermi finite polyenes frequency function ground Hamiltonian Hartree-Fock hopping Hubbard model Hückel independent-electron inter-chain kink lattice Lett linewidth magnetic metallic molecular neutral solitons nonlinear nonlinear optical nuclear observed obtained one-dimensional optical absorption optical gap pair 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 soliton spectra spectrum spin density SSH model structure susceptibility symmetry Synth temperature theoretical theory trans trans-(CH trans-polyacetylene transition V₁ valence bond values Vardeny