Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 2
... excitations , phonons , excitons etc. These excitations can often be obtained from the ground state as a small perturbation as in the case of phonons ; for others , perturbation theory is insufficient to calculate the new state . The ...
... excitations , phonons , excitons etc. These excitations can often be obtained from the ground state as a small perturbation as in the case of phonons ; for others , perturbation theory is insufficient to calculate the new state . The ...
Page 50
... excitations . Note that this is the spectral range not only for an electron - hole excitation , but also for a spin excitation , obtained by flipping one of the spins in the ground state . - We next consider the strong coupling limit ...
... excitations . Note that this is the spectral range not only for an electron - hole excitation , but also for a spin excitation , obtained by flipping one of the spins in the ground state . - We next consider the strong coupling limit ...
Page 82
... Excitations and Excited States Most experiments probing a many - body system involve measurements of excitations or excited states . In this section we shall discuss the theoretical expectations and experimental findings for a number of ...
... Excitations and Excited States Most experiments probing a many - body system involve measurements of excitations or excited states . In this section we shall discuss the theoretical expectations and experimental findings for a number of ...
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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