Abstract
Results of detailed self-consistent calculations for edge states are reported on the energy level structure of wide quantum wires formed by a split gate at GaAs/AlGaAs heterostructures in high magnetic fields at low temperatures. The flattening of the dispersion of edge states (a compressible strip) appears only in very wide wires under limited conditions that the estimated width of the strip is larger than the extent of the edge-state wave function, i.e. the cyclotron radius.
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