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Photon-assisted electron transport through a quantum point contact in a microwave field

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Abstract

It has been shown by the numerical solution of the time-dependent Schrödinger equation that the transmittance of an electron through a smooth one-dimensional barrier in a microwave field can increase by orders of magnitude in the tunneling regime and decrease strongly in the open regime. The leading contribution comes from transitions with absorption or emission of a few photons. The discovered effect can explain a recently observed strong increase in the conductance of a quantum point contact under microwave irradiation.

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Authors and Affiliations

  1. Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 13, Novosibirsk, 630090, Russia

    O. A. Tkachenko, V. A. Tkachenko & Z. D. Kvon

  2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia

    V. A. Tkachenko & Z. D. Kvon

Authors
  1. O. A. Tkachenko
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  2. V. A. Tkachenko
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  3. Z. D. Kvon
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Correspondence to O. A. Tkachenko.

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Original Russian Text © O.A. Tkachenko, V.A. Tkachenko, Z.D. Kvon, 2015, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheckoi Fiziki, 2015, Vol. 102, No. 6, pp. 417–422.

In memory of V.F. Gantmakher

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Tkachenko, O.A., Tkachenko, V.A. & Kvon, Z.D. Photon-assisted electron transport through a quantum point contact in a microwave field. Jetp Lett. 102, 378–382 (2015). https://doi.org/10.1134/S0021364015180150

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