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Page 45
67 ) For a homogeneously dimerized ground state the gap parameter is given by
40 = 4 ; + 40 ( 2 . 68 ) where 4 ; = 2ay is connected with electron - phonon
coupling and dimerization and is thus intrinsic , whereas 4 . = 2t , is of extrinsic
origin .
67 ) For a homogeneously dimerized ground state the gap parameter is given by
40 = 4 ; + 40 ( 2 . 68 ) where 4 ; = 2ay is connected with electron - phonon
coupling and dimerization and is thus intrinsic , whereas 4 . = 2t , is of extrinsic
origin .
Page 68
All these broken symmetries can be described by order parameters , as
discussed for the case of bond alternation in Sect . 2 . 3 . A homogeneous ground
state is characterized by a site - independent order parameter , such as a
constant ...
All these broken symmetries can be described by order parameters , as
discussed for the case of bond alternation in Sect . 2 . 3 . A homogeneous ground
state is characterized by a site - independent order parameter , such as a
constant ...
Page 142
Within the continuum theory the defect on the chain can be represented by a
spatially varying gap parameter A ( x ) = 4 + ... It is easy to see from this formula
that with an appropriate choice of the parameters two solutions are possible ,
namely ...
Within the continuum theory the defect on the chain can be represented by a
spatially varying gap parameter A ( x ) = 4 + ... It is easy to see from this formula
that with an appropriate choice of the parameters two solutions are possible ,
namely ...
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Contents
Introduction | 1 |
An Overview of the Theory of rConjugated Polymers | 7 |
References | 114 |
Copyright | |
6 other sections not shown
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Common terms and phrases
absorption addition applied approach approximation atoms band behaviour bipolarons bond bond alternation calculations carriers chain charged chemical concentration conductivity configuration conjugated polymers contribution correlation corresponding Coulomb Coulomb interactions coupling decreases defects density dependence described determined dimerization discussed dopant doping effects electron electron-electron energy excitations expected experimental experiments field finite frequency function give ground Hamiltonian hopping Hubbard important increase indicated interactions interpretation involving lattice leads length Lett limit localized magnetic materials measurements metallic methods modes molecules motion neutral nuclear observed obtained optical pair parameter peak phonon Phys Physics polarons polyacetylene polyenes polymers position properties range relaxation resonance respect samples Sect separation shift shown shows similar single soliton spectra spectrum spin structure studies symmetry Synth temperature theoretical theory trans-(CH transition units valence values whereas
Bibliographic information
| Title | Conjugated Conducting Polymers Volume 102 of Lecture Notes in Artificial Intelligence Volume 102 of Solid-State Sciences Series Volume 102 of Springer series in solid-state sciences, ISSN 0171-1873 |
| Editors | Helmut G. Kiess, Dionys Baeriswyl |
| Edition | illustrated |
| Publisher | Springer-Verlag, 1992 |
| Original from | the University of Michigan |
| Digitized | 26 Nov 2007 |
| ISBN | 0387535942, 9780387535944 |
| Length | 310 pages |
| Subjects | › › Science / Physics / General |
| Export Citation | BiBTeX EndNote RefMan |