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Miniband transport in vertical superlattice field-effect transistors

Deutschmann, R. A. ; Wegscheider, Werner ; Rother, Martin ; Bichler, Max ; Abstreiter, Gerhard
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Date of publication of this fulltext: 30 Nov 2009 13:57


Abstract

We study the nonequilibrium transport of two-dimensional electrons through a periodic potential. Our samples are fabricated using the cleaved-edge overgrowth technique to provide a vertical field-effect transistor with an undoped GaAs/AlGaAs superlattice channel orthogonal to the current flow. We find a pronounced negative differential resistance, the magnitude of which increases with increasing ...

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