Abstract
For a ballistic ring interferometer based on high-mobility two-dimensional electron gas in an AlGaAs/GaAs heterojunction, the electrostatic potential and the energy spectrum are determined. It is shown that the splitting points in such an interferometer have the form of triangular potential wells. Calculation is performed for the two-dimensional electron transmission through the ring, and the Fano resonances caused by the coupling of the transmitted waves with the levels of higher transverse modes in triangular wells are predicted. These resonances are observed in the experiment.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 71, No. 6, 2000, pp. 366–371.
Original Russian Text Copyright © 2000 by O. Tkachenko, V. Tkachenko, Baksheev, Kvon, Portal.
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Tkachenko, O.A., Tkachenko, V.A., Baksheev, D.G. et al. Electrostatic potential, energy spectrum, and Fano resonances in a ballistic ring interferometer based on an AlGaAs/GaAs heterojunction. Jetp Lett. 71, 255–258 (2000). https://doi.org/10.1134/1.568328
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DOI: https://doi.org/10.1134/1.568328