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This article is cited in 2 scientific papers (total in 2 papers)
CONDENSED MATTER
Zener tunneling between the Landau levels in a two-dimensional electron system with one-dimensional periodic modulation
A. A. Bykovab, I. S. Strygina, E. E. Podyakinaab, S. A. Vitkalovc a Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
b Novosibirsk State University, Novosibirsk, Russia
c Physics Department, City College of the City University of New York, New York, USA
Abstract:
Nonlinear magnetotransport in a two-dimensional electron gas in one-dimensional lateral lattices fabricated from a selectively doped GaAs/AlAs heterostructure is investigated. One-dimensional potential modulation is imposed on the two-dimensional electron gas by means of a set of metal strips formed on the planar surface of Hall bars. The dependences of the differential resistance $r_{xx}$ on the magnetic field $B<0.5$ T are studied at a temperature $T=1.6 $ K in lattices with a period of $a\approx 200$ nm. It is shown that periodic oscillations in $r_{xx}(1/B)$ occur in such lattices under the action of a current-induced Hall field due to Zener tunneling between Landau levels. Interference is found between Zener oscillations and commensurability oscillations of $r_{xx}$ in two-dimensional electron systems with one-dimensional periodic modulation. The experimental results are qualitatively explained by the role of Landau bands in nonlinear transport at large filling factors.
Received: 06.06.2018 Revised: 20.06.2018
Citation:
A. A. Bykov, I. S. Strygin, E. E. Podyakina, S. A. Vitkalov, “Zener tunneling between the Landau levels in a two-dimensional electron system with one-dimensional periodic modulation”, Pis'ma v Zh. Èksper. Teoret. Fiz., 108:2 (2018), 108–113; JETP Letters, 108:2 (2018), 121–126
Linking options:
https://www.mathnet.ru/eng/jetpl5628 https://www.mathnet.ru/eng/jetpl/v108/i2/p108
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