Anomalous low-field classical magnetoresistance in two dimensions.
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.
Dmitriev
Alexander
A
Laboratoire de Physique Mathématique, Université Montpellier 2, place Eugene Bataillon, 34095 Montpellier, France.
Dyakonov
Michel
M
Jullien
Rémi
R