J. Phys. I France 1 (1991) 985-991
A theory of magnetoconductance in Anderson insulatorsJ.P. Bouchaud
Laboratoire de Physique Statistique 24 rue Lhomond, 75231 Paris Cedex 05, France
(Received 3 April 1991, accepted 26 April 1991)
We present a simple theory to understand the effect of magnetic field on the localisation length in Anderson insulators. For thin wires, we find that is doubled, a result recently derived through random matrix theories. For films or bulk samples, new results are obtained. In this case, the localisation length is multiplied by a non universal factor. We discussquantitatively the full dependence of on the magnetic field.
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