INVESTIGATION OF HALL RESISTIVITY IN ANTIDOT LATTICES WITH RESPECT TOCOMMENSURABILITY OSCILLATIONS

In investigation of commensurability oscillations in antidot lattices, we find a relation between the resistivity rho(xx) and the differenti ated Hall resistivity d rho(xy)/dB, where B is the strength of the mag netic field. All peaks of rho(xx) exactly correspond to those of d rho (xy)/dB. This coincidence is direct evidence that the extended Drude m odel for the oscillations cannot fully explain the magnetoresistance e xperimentally observed in antidot lattices.