Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 30
... respect to , and using ( 2.25 ) we observe that ɛ , is stationary with respect to variations in the wavefunctions . Thus , assuming v to be normalized , 21 , and differentiating with respect to 1 , + 1 , we obtain { 141.012 = δεν dt ...
... respect to , and using ( 2.25 ) we observe that ɛ , is stationary with respect to variations in the wavefunctions . Thus , assuming v to be normalized , 21 , and differentiating with respect to 1 , + 1 , we obtain { 141.012 = δεν dt ...
Page 32
... respect to a 2kp - modulation of the lattice . This modulation opens a gap at the Fermi energy and thus leads to a semiconducting , rather than metallic , ground state . For a half - filled band , a 2k , modulation corresponds to a ...
... respect to a 2kp - modulation of the lattice . This modulation opens a gap at the Fermi energy and thus leads to a semiconducting , rather than metallic , ground state . For a half - filled band , a 2k , modulation corresponds to a ...
Page 222
... respect to Bo . For two spins S , and S , a doublet of lines occurs with separation [ 5.14,15 ] △ @ jk = [ 3S ( S + 1 ) ] 1 / 2y2hr3 [ 3 cos2 9jk - 1 ] jk jk ( 5.1.16 ) that depends upon the separation r¡ and the angle 9 of the ...
... respect to Bo . For two spins S , and S , a doublet of lines occurs with separation [ 5.14,15 ] △ @ jk = [ 3S ( S + 1 ) ] 1 / 2y2hr3 [ 3 cos2 9jk - 1 ] jk jk ( 5.1.16 ) that depends upon the separation r¡ and the angle 9 of the ...
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A.J. Heeger atoms Baeriswyl band band gap behaviour bipolarons bond alternation bond lengths calculations chain charge carriers charged solitons Chem chemical shift cis-(CH conducting polymers configuration conjugated polymers Coulomb interaction coupling Cryst D.K. Campbell decreases defects dimerization discussed dopant dopant concentration dopant molecules 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 Kivelson lattice Lett linewidth magnetic metallic molecular neutral solitons nonlinear nonlinear optical nuclear observed 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 Solid State Commun spectra spectrum spin density SSH model susceptibility symmetry Synth theoretical theory thermoelectric coefficient trans trans-(CH trans-polyacetylene transition triplet valence bond values Vardeny