Theoretical Aspects of Conducting Polymers: Electronic Structure and Defect States |
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Page 8
... symmetry with respect to the zero of energy . Indeed it changes sign under the canonical transformation c ns + n ( -1 ) and therefore , given an electronic level at ε c . ns there is necessarily also a level at - . For an even ...
... symmetry with respect to the zero of energy . Indeed it changes sign under the canonical transformation c ns + n ( -1 ) and therefore , given an electronic level at ε c . ns there is necessarily also a level at - . For an even ...
Page 50
... symmetry . This does not remain true in the discrete model where a moving defect has to overcome a small energy barrier . This pinning energy due to lattice discreteness has been estimated to be about 2 meV ( Su et al . 1979 ) , and ...
... symmetry . This does not remain true in the discrete model where a moving defect has to overcome a small energy barrier . This pinning energy due to lattice discreteness has been estimated to be about 2 meV ( Su et al . 1979 ) , and ...
Page 75
... symmetry of the Hamiltonian ( Baeriswyl and Formey 1980 ) , but these symmetry arguments fail when electron - phonon interactions are included . Furthermore the ground state of a one - dimensional chain does not necessarily exhibit long ...
... symmetry of the Hamiltonian ( Baeriswyl and Formey 1980 ) , but these symmetry arguments fail when electron - phonon interactions are included . Furthermore the ground state of a one - dimensional chain does not necessarily exhibit long ...
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