Theoretical Aspects of Conducting Polymers: Electronic Structure and Defect States |
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Page 21
... density is coupled to the phonons and thus the ground state exhibits an oscillating charge - density component ( charge - density wave ) . The alternating terms in Eq . ( 26 ) exactly compensate each other whereas ( 25 ) ( 26 ) the ...
... density is coupled to the phonons and thus the ground state exhibits an oscillating charge - density component ( charge - density wave ) . The alternating terms in Eq . ( 26 ) exactly compensate each other whereas ( 25 ) ( 26 ) the ...
Page 73
... density = i , spin - density wave ( SDW ) for is and spin - bond - order wave ( SBOW ) for As O where A is real ( detailed calculations for these O = different cases have been presented by Fukutome and Sasai ( 1982 , 1983 ) ) . In all ...
... density = i , spin - density wave ( SDW ) for is and spin - bond - order wave ( SBOW ) for As O where A is real ( detailed calculations for these O = different cases have been presented by Fukutome and Sasai ( 1982 , 1983 ) ) . In all ...
Page 79
... density of states of Fig . 12 vanishes exactly for 0 < ε < • It is an artefact of the assumption that impurities are restricted to even sites ; for a general distribution there would be a small density of states for 0 < ε < A With ...
... density of states of Fig . 12 vanishes exactly for 0 < ε < • It is an artefact of the assumption that impurities are restricted to even sites ; for a general distribution there would be a small density of states for 0 < ε < A With ...
Common terms and phrases
A.J. Heeger absorption amplitude approximation associated assume Baeriswyl band becomes Bishop bond alternation bond length bond order boundary calculations Campbell chain changes charge conducting configuration consider constant continuum limit correlation corresponds coupling defect density depend described determined dimerization discrete discuss disorder distortion dynamical effects electronic energy equation et al expected experiments extent field fluctuations force function given gives ground Hamiltonian hand Hückel impurity increasing integral interaction interchain coupling involved kink lattice leads Lett levels limit MacDiarmid Mele modes Notice observed obtained optical parameter particular Peierls phase phonon Phys Physics points polaron polyacetylene polymers potential presented produced properties proposed represents respect Rice Schrieffer self-consistency shown single Solid soliton solution strongly structure temperature theory whereas yields