Defect related anomalous mobility of small polarons in dielectric oxides at the example of congruent lithium niobate
Anton Pfannstiel,
Mirco Imlau,
Marco Bazzan
et al.
Abstract:Polarons play a major role in the description of optical, electrical and dielectrical properties of several ferroelectric oxides. The motion of those particles occurs by elementary hops among the material lattice sites. In order to compute macroscopic transport parameters such as charge mobility, normal (i.e. Fickian) diffusion laws are generally assumed. In this paper we show that when defect states able to trap the polarons for long times are considered, significant deviations from the normal diffusion behav… Show more
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