▎ 摘　　要

Magnetotransport in mesoscopic samples with semiconductor artificial graphene has been simulated within the Landauer-Buttiker formalism. Model four-terminal systems in a high-mobility two-dimensional electron gas have a square shape with a side of 3-5 mu m, which is filled with a short-period (120 nm) weakly disordered triangular lattice of antidots at the modulation amplitude of the electrostatic potential comparable with the Fermi energy. It has been found that the Hall resistance R-xy(B) in the magnetic field range of B = 10-50 mT has a hole plateau R-xy =-R-0, where R-0 = h/2e(2) = 12.9 kO, at carrier densities in the lattice below the Dirac point n < n(1D) and an electron plateau R-xy =R-0 at n > n(1D). Enhanced disorder destroys the plateaus, but a carrier type (electrons or holes) holds. Long-range disorder at low magnetic fields suppresses quantized resistance plateaus much more efficiently than short-range disorder.