Magnetic-field effects and intrinsic bistability in resonant tunneling systems

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Abstract
A theoretical study of resonant tunneling in double-barrier heterostructures in the presence of longitudinal magnetic fields is presented. Self-consistent treatment of charge injection and the effective carrier potential considerably improve agreement between theory and experimental results. Charging of the well is found to induce intrinsic current bistability and significantly reduces magnetic-field-induced fluctuations in the differential conductivity. The width of the bistable voltage region and the peak current are found to vary as a function of the magnetic field.