24 citations · 123 across the 20 of their papers we have counts for
3 papers · 1 filter
Transformation of polarons to bipolarons in disordered matter
I. Sakellis, A. N. Papathanassiou, J. Grammatikakis
The polaron to bipolaron transition in disordered media under the influence of a broadband ac electric field is suggested: ac conductivity vs. frequency measurements in disordered…
Migration volume for polaron dielectric relaxation in disordered materials
A. N. Papathanassiou, I. Sakellis, J. Grammatikakis
A theoretical study of the influence of pressure on the dielectric relaxation related with polaron tunneling and phonon assisted hopping in disordered solids is developed. The sign…
Universal frequency-dependent ac conductivity of conducting polymer networks
A. N. Papathanassiou, I. Sakellis, J. Grammatikakis
A model based on the aspect of the distribution of the length of conduction paths accessible for electric charge flow reproduces the universal power-law dispersive ac conductivity…