Conductance distribution between Hall plateaus

Article

关键词: QUANTUM;    FLUCTUATIONS;    TRANSITION;    EDGE;   

DOI  :  10.1103/PhysRevB.60.8992

来源: SCIE

【 摘 要 】

Mesoscopic fluctuations of two-port conductance and four-port resistance between Hall plateaus an studied within a realistic model for a two-dimensional electron gas in a perpendicular magnetic field and a smooth disordered potential. The two-port conductance distribution P(g) is concave between g=0 and g=1 and is nearly flat between g=0.2 and g=0.8. These characteristics are consistent with recent observations. The distribution is found to be sharply peaked near the end points g=0 and g=1. The distribution functions for the three independent resistances in a four-port Hall bar geometry are, on the ether hand, characterized by a central peak and a relatively large width.

【 授权许可】

Free