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Dielectric susceptibility of the Coulomb-glass

A. Diaz-Sanchez·M. Ortuno·M. Pollak·A. Perez-Garrido·A. Moebius
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Abstract

We derive a microscopic expression for the dielectric susceptibility $χ$ of a Coulomb glass, which corresponds to the definition used in classical electrodynamics, the derivative of the polarization with respect to the electric field. The fluctuation-dissipation theorem tells us that $χ$ is a function of the thermal fluctuations of the dipole moment of the system. We calculate $χ$ numerically for three-dimensional Coulomb glasses as a function of temperature and frequency.

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A. Diaz-Sanchez, M. Ortuno, M. Pollak, A. Perez-Garrido, A. Moebius. 1999-02-10. Dielectric susceptibility of the Coulomb-glass. https://doi.org/10.1103/physrevb.59.910

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