Nk. Patel et al., RESONANT COUPLING EFFECTS OBSERVED IN INDEPENDENTLY CONTACTED TRIPLE-QUANTUM-WELL STRUCTURES, Journal of physics. Condensed matter, 7(44), 1995, pp. 585-591
Independent contacts have been produced to all three two-dimensional e
lectron gases (2DEGs) in a triple-quantum-well structure. This has bee
n achieved by using in situ focused ion beam implantation followed by
molecular beam epitaxial regrowth. Lateral transport studies of the in
dividual layers have demonstrated resonant coupling between the high-m
obility 2DEGs. Large resistance changes are observed due to coupling b
etween the layers and these can be enhanced by having all three 2DEGs
on resonance. A versatile device can thus be fabricated for studying e
lectron interactions.