Polarization-dependent Landau level crossing in a two-dimensional electron system in a MgZnO/ZnO heterostructure

D. Maryenko, J. Falson, Y. Kozuka, A. Tsukazaki, M. Kawasaki

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We report electrical transport measurements in a tilted magnetic field on a high-mobility two-dimensional electron system (2DES) confined at the MgZnO/ZnO heterointerface. The observation of multiple crossing events of spin-resolved Landau levels (LLs) enables the mapping of the sequence of electronic states. We further measure the renormalization of electron spin susceptibility at zero field and the susceptibility dependence on the electron spin polarization. The latter manifests the deviation from the Pauli spin susceptibility. As a result, the crossing of spin-resolved LLs shifts to smaller tilt angles and the first Landau level coincidence event is absent even when the magnetic field has only a component perpendicular to the 2DES plane.

Original languageEnglish
Article number245303
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number24
DOIs
Publication statusPublished - 2014 Dec 18

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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