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Abstract <p>Polarized photoluminescence is studied in ZnO/MgZnO heterostructures with different two-dimensional electron gas densities at 0.5 K and in high magnetic fields. At high carrier density, the luminescence spectrum has the shape of the conventional Landau fan diagram, whereas at lower density it shows anomalous behavior: a single dominant line with unexpected splittings at integer filling factors, inconsistent with either cyclotron or Zeeman energies.</p>

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Anomalies in Photoluminescence Spectra of ZnO/MgZnO Heterostructures in Strong Magnetic Fields

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • P. S. Berezhnoy,
  • A. S. Koreev,
  • A. B. Van’kov,
  • V. V. Solovyev

摘要

Abstract

Polarized photoluminescence is studied in ZnO/MgZnO heterostructures with different two-dimensional electron gas densities at 0.5 K and in high magnetic fields. At high carrier density, the luminescence spectrum has the shape of the conventional Landau fan diagram, whereas at lower density it shows anomalous behavior: a single dominant line with unexpected splittings at integer filling factors, inconsistent with either cyclotron or Zeeman energies.