Conductance fluctuations at the integer quantum Hall plateau transition

摘要: We study numerically conductance fluctuations near the integer quantum Hall effect plateau transition. The system is presumed to be in a mesoscopic regime, with phase coherence length comparable size. focus on two-terminal G for square samples, considering both periodic and open boundary conditions transverse current. At transition, broadly distributed, distribution function close uniform interval between zero one units of e^2/h. Our results are consistent recent experiment by Cobden Kogan sample.