Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 68
... phonon or by electron - electron interactions . The manner in which the inter - site phonons in the SSH model produce , via the Peierls mechanism , the dimerized BOW ground state has been discussed in detail in Sect . 2.3 . Similarly ...
... phonon or by electron - electron interactions . The manner in which the inter - site phonons in the SSH model produce , via the Peierls mechanism , the dimerized BOW ground state has been discussed in detail in Sect . 2.3 . Similarly ...
Page 185
... phonons with wave vector ph = 0 can participate in one - phonon processes . Moreover , only lattice vibrations having certain types of symmetry give rise to infrared absorption . Such vibrations are said to be infrared active . For two ...
... phonons with wave vector ph = 0 can participate in one - phonon processes . Moreover , only lattice vibrations having certain types of symmetry give rise to infrared absorption . Such vibrations are said to be infrared active . For two ...
Page 186
... phonon of frequency w is created such that w ; = w , + w . The scattering mechanism involves therefore virtual electronic transitions due to the absorption of the incident photon w ,, the creation of the phonon w and the emission of the ...
... phonon of frequency w is created such that w ; = w , + w . The scattering mechanism involves therefore virtual electronic transitions due to the absorption of the incident photon w ,, the creation of the phonon w and the emission of the ...
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A.J. Heeger atoms Baeriswyl band gap behaviour bipolarons bond alternation bond lengths calculations chain charge carriers charged solitons Chem chemical shift cis-(CH conducting polymers conjugated polymers correlation Coulomb interaction coupling Cryst D.K. Campbell defects dielectric function diffusion dimerization discussed dopant dopant concentration dopant molecules doping doping levels e-e interactions effects electron correlation electron spin electron-electron interactions electron-phonon ENDOR energy excitations exciton experimental frequency function Hamiltonian Hartree-Fock hopping Hubbard model Hückel hyperfine interactions inter-chain Kivelson lattice Lett linewidth magnetic metallic molecular neutral solitons nonlinear nonlinear optical nuclear observed obtained one-dimensional optical absorption optical gap parameters peak Peierls Peierls-Hubbard model phonon Phys polarons polyacetylene polyenes polypyrrole polythiophene properties proton quantum quasi-particles Raman resonance samples Sect shown in Fig spectra spectrum spin density structure symmetry Synth tensor theory trans trans-(CH trans-polyacetylene transition valence values Vardeny