Abstract
AbstractSpatial fluctuations of the potential are inherent in hopping transport. The effect is considered of the stochastic dependence between the potentials of hopping sites, specifically the case when the correlation length of the potential is considerably longer than the hopping distance. The percolation approach is used. The behavior is found to depend on certain characteristics of the equipotential surface at the Fermi energy. If this surface is non‐connected, an activated conductivity is expected. If the surface consists of parts connected through narrow channels, a T−l/2 dependence is predicted. For stronger connectivity, a T−1/3 dependence is deduced. The T−1/4 dependence, characteristic of hopping in the absence of spatial correlation, is not expected to occur.
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