Abstract
This article describes experimental investigations of the transition from a two-dimensional electron gas to a quasi-one-dimensional quantum wire by the magnetophonon effect, tuned by Schottky gates in GaAs/AlGaAs. We present a model of the depletion region linked to the gates. The measurements allow the band-edge effective mass to be determined from two to one dimension between 89.5 and 348 K. We performed the measurements with a single, isolated quantum wire in magnetic fields up to 17 T.
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