Generalized adiabatic polaron hopping: Meyer-Neldel compensation and Poole-Frenkel behavior |
| |
Authors: | Emin David |
| |
Institution: | Department of Physics and Astronomy, University of New Mexico Albuquerque, New Mexico 87131, USA. |
| |
Abstract: | The commonly employed adiabatic treatment of polaron hopping is extended to treat the continuous alteration of a carrier wave function with the atoms' movements and a carrier's long-range interaction with a polar surrounding. These features, respectively, introduce carrier-induced softening of the atoms' vibrations and a hopping activation energy that depends on hopping distance. The Meyer-Neldel compensation effect results from carrier-induced softening of vibrations. Poole-Frenkel behavior emerges for electric-field driven polaron hopping in ionic and polar media. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|