The magnetoresistance of classical two-dimensional electrons scattered by randomly distributed impurities is investigated by numerical simulation. At low magnetic fields, we find for the first time a negative magnetoresistance proportional to |B|. This unexpected behavior is shown to be due to a memory effect specific for backscattering events, which was not considered previously.
@article{arxiv.cond-mat/0212178,
title = {Anomalous Low-Field Classical Magnetoresistance in Two Dimensions},
author = {Alexander Dmitriev and Michel Dyakonov and Remi Jullien},
journal= {arXiv preprint arXiv:cond-mat/0212178},
year = {2009}
}