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Dynamic instability in resonant tunneling

G. Obermair·J. Inkoferer·F. Claro
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Abstract

We show that an instability may be present in resonant tunneling through a quantum well in one, two and three dimensions, when the resonance lies near the emitter Fermi level. A simple semiclassical model which simulates the resonance and the projected density of states by a nonlinear conductor, the Coulomb barrier by a capacitance, and the time evolution by an iterated map, is used. The model reproduces the observed hysteresis in such devices, and exhibits a series of bifurcations leading to fast chaotic current fluctuations.

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G. Obermair, J. Inkoferer, F. Claro. 2001-06-18. Dynamic instability in resonant tunneling. https://doi.org/10.1103/physrevb.64.201405

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