Simulation studies of variable-range hopping in the Coulomb gap
- 1 April 1992
- journal article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 65 (4) , 647-650
- https://doi.org/10.1080/13642819208204898
Abstract
A Monte Carlo computer simulation of the conductivity of a two-dimensional localized interacting system has been made. A plot of d (log σ)/d (log T) against T, on a double-logarithmic scale, shows clearly two distinct regimes, corresponding to nearest-neighbour and variable-range hopping. For the latter, log σT−x with an exponent x equal to 0·31. Mott's law for variable-range hopping is shown to be obeyed down to temperatures where kT is of the order of a twentieth of the Coulomb gap.Keywords
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