Critical Behavior of the Low-Field Hall Conductivity at a Percolation Threshold

The critical behavior of the low-field Hall effect in a three-dimensional metal-nonmetal composite near the percolation threshold has been determined for the first time from calculations on a reliable random-resistor-network model. The Hall coefficient Rₑ is found to diverge as |p-pc|^-g, where g=0.29±0.05.