MAGNETIC LOCALIZATION OF CLASSICAL ELECTRONS IN 2D DISORDERED LATTICE

The classical ballistic motion of 2D electrons interacting with a diso rdered system of round scatterers is studied in a magnetic field. Besi des the usual percolational phase transition related to geometrical co nnectedness, the magnetic percolation threshold was found, separating the infinite motion for high cyclotron radius r(c), and total localiza tion of electrons for small r(c). The components of the conductivity t ensor are studied far and near the pecolation threshold. Nonlinear con ductivity of the insulating magnetic phase is obtained. (C) 1998 Elsev ier Science B.V. All rights reserved.