Dielectric susceptibility of the Coulomb-glass
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Knowledge AreaFísica Aplicada
SponsorsWe acknowledge financial support from the DGES project number PB96-1118, SMWK, and DFG (SFB 393). A great part of this work was performed during A. D.-S.’s visit at the IFW Dresden; A. D.-S. thanks the IFW for its hospitality.
PublisherAmerican Physical Society
Bibliographic CitationDÍAZ SÁNCHEZ, A., ORTUÑO, M., POLLAK, M., PÉREZ GARRIDO, A. Dielectric susceptibility of the Coulomb-glass. Physical Review B, 59: 910-914, 1999. ISSN 1550-235X
We derive a microscopic expression for the dielectric susceptibility X 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 is a function of the thermal fluctuations of the dipole moment of the system. We calculate X numerically for three–dimensional Coulomb glasses as a function of temperature and frequency.
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