Abstract
The electronic states of GaAs/AlGaAs quantum well wires under an applied magnetic field are studied by using the empirical pseudopotential method. The energy spectra are calculated as a function of the magnetic field strength. The results show a strong non-parabolicity and field-dependent subband effective mass. The formation of bulk-like Landau levels and edge (skipping) states results in a rapid increasing of density of states at the subband bottom reflecting the change of the 1D subband structures to 2D-like Landau levels. The asymptotic behaviours of the Landau levels in the weak and strong magnetic field limits are also obtained by a simple effective mass analysis and used to interpret the results of the microscopic calculation.
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