Quasi-degenerate self-trapping in one-dimensional charge transfer exciton
Strongly Correlated Electrons
2009-11-07 v1 Statistical Mechanics
Abstract
The self-trapping by the nondiagonal particle-phonon interaction between two quasi-degenerate energy levels of excitonic system, is studied. We propose this is realized in charge transfer exciton, where the directions of the polarization give the quasi-degeneracy. It is shown that this mechanism, unlike the conventional diagonal one, allows a coexistence and resonance of the free and self-trapped states even in one-dimensional systems and a quantitative theory for the optical properties (light absorption and time-resolved luminescence) of the resonating states is presented. This theory gives a consistent resolution for the long-standing puzzles in quasi-one-dimensional compound A-PMDA.
Keywords
Cite
@article{arxiv.cond-mat/0103551,
title = {Quasi-degenerate self-trapping in one-dimensional charge transfer exciton},
author = {A. S. Mishchenko and N. Nagaosa},
journal= {arXiv preprint arXiv:cond-mat/0103551},
year = {2009}
}
Comments
accepted to Phys. Rev. Letters