Abstract
We have measured the magnetoresistances of mesoscopic wires fabricated in AlGaAs/GaAs two-dimensional electron gas. The nonlocal magnetoresistances show oscillatory behaviors in the transition regions between successive quantum Hall states. We find that the nonlocal oscillations are well explained by the mixing effect of edge states, whose longitudinal wave vectors can be obtained by using the linear confining potential approximation near the edge. Our analysis implies that the confining field strength should in effect decrease as the magnetic field increases.
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