NUMERICAL-STUDIES ON QUANTUM TRANSPORT IN ANTIDOT ARRAYS IN MAGNETIC-FIELDS

The density of states and the conductivity tenser in antidot arrays in magnetic fields are calculated numerically by the self-consistent Bor n approximation (SCBA). The peak positions of the density of states ag ree well with the quantization condition for several short-periodic or bits. The behavior of calculated magnetoresistivity agrees with that o f experimental data. However, the behavior of the conductivity tenser is very complicated, and it is not explained simply by the periodic or bit expression for the conductivity tenser.