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Observation of anomalous Hall effect in a non-magnetic two-dimensional electron system

Author

Listed:
  • D. Maryenko

    (RIKEN Center for Emergent Matter Science (CEMS))

  • A. S. Mishchenko

    (RIKEN Center for Emergent Matter Science (CEMS))

  • M. S. Bahramy

    (RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

  • A. Ernst

    (Max-Planck-Institut fr Mikrostrukturphysik
    Institut für Theoretische Physik, Johannes Kepler Universität)

  • J. Falson

    (University of Tokyo)

  • Y. Kozuka

    (University of Tokyo)

  • A. Tsukazaki

    (Institute for Materials Research, Tohoku University)

  • N. Nagaosa

    (RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

  • M. Kawasaki

    (RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

Abstract

Anomalous Hall effect, a manifestation of Hall effect occurring in systems without time-reversal symmetry, has been mostly observed in ferromagnetically ordered materials. However, its realization in high-mobility two-dimensional electron system remains elusive, as the incorporation of magnetic moments deteriorates the device performance compared to non-doped structure. Here we observe systematic emergence of anomalous Hall effect in various MgZnO/ZnO heterostructures that exhibit quantum Hall effect. At low temperatures, our nominally non-magnetic heterostructures display an anomalous Hall effect response similar to that of a clean ferromagnetic metal, while keeping a large anomalous Hall effect angle θAHE≈20°. Such a behaviour is consistent with Giovannini–Kondo model in which the anomalous Hall effect arises from the skew scattering of electrons by localized paramagnetic centres. Our study unveils a new aspect of many-body interactions in two-dimensional electron systems and shows how the anomalous Hall effect can emerge in a non-magnetic system.

Suggested Citation

  • D. Maryenko & A. S. Mishchenko & M. S. Bahramy & A. Ernst & J. Falson & Y. Kozuka & A. Tsukazaki & N. Nagaosa & M. Kawasaki, 2017. "Observation of anomalous Hall effect in a non-magnetic two-dimensional electron system," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14777
    DOI: 10.1038/ncomms14777
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    Cited by:

    1. Md Shafayat Hossain & Qi Zhang & David Graf & Mikel Iraola & Tobias Müller & Sougata Mardanya & Yi-Hsin Tu & Zhuangchai Lai & Martina O. Soldini & Siyuan Li & Yao Yao & Yu-Xiao Jiang & Zi-Jia Cheng & , 2025. "Tunable superconductivity coexisting with the anomalous Hall effect in a transition metal dichalcogenide," Nature Communications, Nature, vol. 16(1), pages 1-9, December.

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