Magnetotransport study reveals anisotropic electron scattering rates in wide miniband GaAs/AlAs island superlattices, indicating how barrier morphology directs quantum conduction.
We investigate the electronic properties of wide miniband ({~}100 meV) GaAs/AlAs superlattice structures in which the tunnel barriers are formed from planar arrays of AlAs islands. By studying the effect of an in-plane magnetic field on the miniband conduction, we determine the strength and anisotropy of the rate of electron scattering by the island arrays.
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Patanè et al. (2002) studied this question.
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