Robustness of the single dressing fraction characterization of polaron structure in multi-mode partial dressing theory
Brown, David W.
Date of Issue1994
School of Materials Science and Engineering
In approaches to polaron theory which attempt to unify small and large polaron behavior, the notion of “partial dressing” plays a central role in determining the allocation of interaction energy between correlations of the small and large polaron types. This paper examines some of the consequences of generalizing from a single dressing fraction to a distribution of dressing fractions. Employing a distribution of dressing fractions allows distinct phonon modes to allocate interaction energy in distinct ratios, thereby supporting a more flexible description of polaron structure than that based on a single dressing fraction applied uniformly to all modes. The distribution of optimal dressing fractions can be characterized by a mean dressing fraction whose properties are in close agreement with the single dressing fraction used previously.
DRNTU::Science::Physics::Atomic physics::Solid state physics
Journal of luminescence
©1994 Elsevier This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Luminescence, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/0022-2313(94)90362-X].