Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/61844
Type: Artigo de periódico
Title: DIFFUSION AND MOBILITY AND GENERALIZED EINSTEIN RELATION
Author: VASCONCELLOS, AR
LUZZI, R
GARCIACOLIN, LS
Abstract: The general response theory to thermal perturbations presented in the preceding paper is applied to a simple model. We obtain the evolution equation for the particle density, which becomes of the form of a propagating wave with a damping dependent on the diffusion coefficient. The latter is calculated at the microscopic level. For a charged system we also determine the mobility coefficient for arbitrarily intense electric fields, obtaining a generalized Ohm's law for nonlinear charge transport. Using the expressions for both transport coefficients we derive the Einstein relation in the nonlinear nonequilibrium thermodynamic state of the system.
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/0378-4371(95)00164-6
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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