Density of states and extent of wave function: two crucial factors for   small polaron hopping conductivity in 1D
  We introduce a theoretical model to scrutinize the conductivity of small polarons in one-dimensional disordered systems, focusing on two crucial --as will be demonstrated-- factors: the density of states and the spatial extent of the electronic wave function. The investigation is performed for any temperature up to 300 K and under electric field of arbitrary strength up to the polaron dissociation limit. To accomplish this task we combine analytical work with numerical calculations. 
Margarita Dimakogianni, Constantinos Simserides, Georgios P. Triberis
cond-mat.dis-nn