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Magnetic-field-induced suppression of electronic conduction in a superlattice
1School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom. Amalia.Patane@nottingham.ac.uk
Abstract:
We use a magnetic field applied along the axis of a semiconductor superlattice (SL) as a controllable means of creating a one-dimensional band structure. We demonstrate that the current flow through the SL is strongly suppressed when the electron motion perpendicular to the SL axis is strongly confined by the quantizing magnetic field. By modeling this behavior using semiclassical and nonequilibrium Green's function methods, we show that the observed quenching arises from a qualitative change in electron dynamics caused by increasing quantum confinement.
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