Cooperative and non-linear phenomena at the neutral-ionic phase transition
arXiv:cond-mat/0112161
Abstract
The complex interplay among on-site energy, Hubbard U, and coupling to Holstein and Peierls phonons at the neutral-ionic phase transition is discussed using diagrammatic valence bond calculations. The charge transfer and dimerization amplitudes and the infrared intensity of molecular vibrations are studied in the transition region.
6 pages, 2 figures, conference ISCOM 2001