Zener Tunneling between the Landau Levels in a Two-Dimensional Electron System with One-Dimensional Periodic Modulation

A. A. Bykov, I. S. Strygin, E. E. Rodyakina, S. A. Vitkalov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

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 rxx 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 rxx(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 rxx 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 languageEnglish
Pages (from-to)121-126
Number of pages6
JournalJETP Letters
Volume108
Issue number2
DOIs
Publication statusPublished - 1 Jul 2018

Keywords

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

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