3 papers
cond-mat.soft2009
Density scaling of the diffusivity in viscous liquids: Identification of the scaling exponent with the pressure derivative of the isothermal bulk modulus
Anthony N. Papathanassiou, Ilias Sakellis
A density scaled diffusivity function for viscous liquids derived earlier [Phys. Rev. E 79, 032501 (2009)] is revisited, based on an improved equation of state assuming that the is…
cond-mat.dis-nn2008
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…
cond-mat.dis-nn2008
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…