Magnetotransport in a 2D system with strong scatterers: renormalization of Hall coefficient caused by non-Markovian effects

摘要

We show that a sharp dependence of the Hall coefficient R on the magnetic field B arises in two-dimensional electron systems with strong scatterers. The phenomenon is due to classical memory effects. We calculate analytically the dependence of R on B for the case of scattering by antidots (modeled by hard disks of radius a), rendomly distributed with concentration n01/a2. We demonstrate that in very weak magnetic fields (omegactautr=