2->1- Plateau transition:
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The animation shows a magnetic field sweep as indicated in the line at the top. The sample represents a standard QHE-situation without a gate electrode. Starting at the n=2 plateau, the potential distribution indicates edge stripes in the 2nd Landau level (LL). Approaching the transition regime, the edge stripes get broader and finally fill the whole sample area, but still indicating a pure transverse potential profile. After this, the potential profile starts to turn in longitudinal direction and finally the potential distribution in the interior gets undefined, which indicates that the 2nd LL gets insulating. At the same time Rxy approaches the n=1 plateau. Since there is another completely filled LL below which tries to keep the edge potential constant, the longitudinal voltage drop between the longitudinal voltage probes does not completely follow the voltage drop in the 2nd LL.