Symmetrized general hopping current equation |
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Authors: | Riess Ilan Maier Joachim |
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Affiliation: | Max-Planck-Institut für Festk?rperforschung, Heisenbergstrabe 1, 70569 Stuttgart, Germany. riess@techunix.technion.ac.il |
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Abstract: | We show that within the validity range of local thermal equilibrium--therein, however, irrespective of the magnitude of the driving force--a simple current equation can be formulated that expresses the current in terms of a product of a local nonequilibrium conductivity and a sinh function of half the electrochemical potential drop (normalized with respect to kBT) over the local hopping distance. This local current/driving force relation takes account of both electrical and compositional effects and can be generalized as to include interactions and structural variations. |
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