## 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 ≈ 200nm. 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.

Original language | English |
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Pages (from-to) | 121-126 |

Number of pages | 6 |

Journal | JETP Letters |

Volume | 108 |

Issue number | 2 |

DOIs | |

Publication status | Published - 1 Jul 2018 |

## Keywords

- HIGH FILLING FACTORS
- MAGNETORESISTANCE OSCILLATIONS
- QUANTUM-WELL
- GAS
- SUPERLATTICE