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Composite fermion liquid to Wigner solid transition in the lowest Landau level of zinc oxide

Author

Listed:
  • D. Maryenko

    (RIKEN Center for Emergent Matter Science (CEMS))

  • A. McCollam

    (Radboud University)

  • J. Falson

    (The University of Tokyo
    Max Planck Institute for Solid State Research)

  • Y. Kozuka

    (The University of Tokyo
    National Institute for Materials Science)

  • J. Bruin

    (Radboud University
    Max Planck Institute for Solid State Research)

  • U. Zeitler

    (Radboud University)

  • M. Kawasaki

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

Abstract

Interactions between the constituents of a condensed matter system can drive it through a plethora of different phases due to many-body effects. A prominent platform for it is a dilute two-dimensional electron system in a magnetic field, which evolves intricately through various gaseous, liquid and solid phases governed by Coulomb interaction. Here we report on the experimental observation of a phase transition between the composite fermion liquid and adjacent magnetic field induced phase with a character of Wigner solid. The experiments are performed in the lowest Landau level of a MgZnO/ZnO two-dimensional electron system with attributes of both a liquid and a solid. An in-plane magnetic field component applied on top of the perpendicular magnetic field extends the Wigner-like phase further into the composite fermion liquid phase region. Our observations indicate the direct competition between a composite fermion liquid and a Wigner solid formed either by electrons or composite fermions.

Suggested Citation

  • D. Maryenko & A. McCollam & J. Falson & Y. Kozuka & J. Bruin & U. Zeitler & M. Kawasaki, 2018. "Composite fermion liquid to Wigner solid transition in the lowest Landau level of zinc oxide," Nature Communications, Nature, vol. 9(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06834-6
    DOI: 10.1038/s41467-018-06834-6
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    Cited by:

    1. Kosuke Noro & Yusuke Kozuka & Kazuma Matsumura & Takeshi Kumasaka & Yoshihiro Fujiwara & Atsushi Tsukazaki & Masashi Kawasaki & Tomohiro Otsuka, 2024. "Parity-independent Kondo effect of correlated electrons in electrostatically defined ZnO quantum dots," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Haoyun Huang & Waseem Hussain & S. A. Myers & L. N. Pfeiffer & K. W. West & K. W. Baldwin & G. A. Csáthy, 2024. "Evidence for Topological Protection Derived from Six-Flux Composite Fermions," Nature Communications, Nature, vol. 15(1), pages 1-6, December.

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