Theoretical Aspects of Conducting Polymers: Electronic Structure and Defect States |
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Page 49
... singly occupied since then charge neutrality requires an occupation number 1/2 for the midgap level . This problem of charge fractionalization represents a fascinating field in itself and much effort is devoted to it at present ( cf ...
... singly occupied since then charge neutrality requires an occupation number 1/2 for the midgap level . This problem of charge fractionalization represents a fascinating field in itself and much effort is devoted to it at present ( cf ...
Page 55
... singly occupied or donor - like where the upper level is singly and the lower one doubly occupied . Therefore the polaron state exhibits the conventional spin - charge characteristics : it has the charge of a single electron ( or hole ) ...
... singly occupied or donor - like where the upper level is singly and the lower one doubly occupied . Therefore the polaron state exhibits the conventional spin - charge characteristics : it has the charge of a single electron ( or hole ) ...
Page 69
... single parameter U one tacitly assumes that it contains " in some way " the long - range part of the Coulomb potential . In the case of a half - filled band ( and in the strong- coupling limit ) all sites are singly occupied in the ...
... single parameter U one tacitly assumes that it contains " in some way " the long - range part of the Coulomb potential . In the case of a half - filled band ( and in the strong- coupling limit ) all sites are singly occupied in the ...
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