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New resonant backscattering mode in a small-size quantum interferometer |
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| Authors: | Z. D. Kvon E. A. Galaktionov V. A. Sablikov A. K. Savchenko D. A. Shcheglov A. V. Latyshev |
| Affiliation: | (1) Institute of Semiconductor Physics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia;(2) School of Physics, University of Exeter, Exeter, EX4 4QL, UK;(3) Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Fryazino, Moscow region, 141190, Russia |
| Abstract: | Giant conductance oscillations quasi-periodic in the gate voltage are observed in the open state of a small-size quantum interferometer (of effective radius r ≈ 100 nm) based on the high-mobility 2D electron gas of an AlGaAs/GaAs heterojunction. These oscillations presumably result from the multiparticle effects that occur in the interferometer arms and give rise to a strong backscattering and to conductance peaks, whose period corresponds to a one-electron change in the number of electrons in the arms. |
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