Journal
EUROPHYSICS LETTERS
Volume 57, Issue 1, Pages 67-73Publisher
EDP SCIENCES S A
DOI: 10.1209/epl/i2002-00542-5
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We report first direct evidence, by X-ray diffuse scattering, of lattice-relaxed charge transfer exciton strings, which are one-dimensional self-trapped multiadjacent excitons. These non-linear excitations are key objects in quasi-one-dimensional organic compounds that undergo the neutral-ionic transition and are responsible for their physical properties. The one-dimensional fluctuations are very well described within the framework of the transfer integral method and physical parameters are deduced from both X-ray and dielectric measurements.
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