Hall effect in a three-dimensional percolation system
- 1 July 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 36 (1), 790-792
- https://doi.org/10.1103/physrevb.36.790
Abstract
We have studied the Hall effect in random mixtures of Al-Ge. The observed variation of the Hall coefficient over a wide range of concentration was found to be in full agreement with recent theoretical predictions for three-dimensional percolation systems. For the first time the critical behavior was studied near both percolation thresholds, namely, near the critical-volume concentrations of Al and of Ge. We observed a strong divergence of the Hall coefficient with exponent 3.8±0.2 near the threshold of Al, and a much slower divergence with exponent 0.38±0.05 close to the threshold of Ge.Keywords
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