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Transport evidence for a sliding two-dimensional quantum electron solid

Author

Listed:
  • Pedro Brussarski

    (Northeastern University)

  • S. Li

    (City College of the City University of New York)

  • S. V. Kravchenko

    (Northeastern University
    University of Electronic Science and Technology of China)

  • A. A. Shashkin

    (Chernogolovka)

  • M. P. Sarachik

    (City College of the City University of New York)

Abstract

Ignited by the discovery of the metal-insulator transition, the behaviour of low-disorder two-dimensional (2D) electron systems is currently the focus of a great deal of attention. In the strongly interacting limit, electrons are expected to crystallize into a quantum Wigner crystal, but no definitive evidence for this effect has been obtained despite much experimental effort over the years. Here, studying the insulating state of a 2D electron system in silicon, we have found two-threshold voltage-current characteristics with a dramatic increase in noise between the two threshold voltages. This behaviour cannot be described within existing traditional models. On the other hand, it is strikingly similar to that observed for the collective depinning of the vortex lattice in type-II superconductors. Adapting the model used for vortexes to the case of an electron solid yields good agreement with our experimental results, favouring the quantum electron solid as the origin of the low-density state.

Suggested Citation

  • Pedro Brussarski & S. Li & S. V. Kravchenko & A. A. Shashkin & M. P. Sarachik, 2018. "Transport evidence for a sliding two-dimensional quantum electron solid," Nature Communications, Nature, vol. 9(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06332-9
    DOI: 10.1038/s41467-018-06332-9
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    Cited by:

    1. Kaining Yang & Xiang Gao & Yaning Wang & Tongyao Zhang & Yuchen Gao & Xin Lu & Shihao Zhang & Jianpeng Liu & Pingfan Gu & Zhaoping Luo & Runjie Zheng & Shimin Cao & Hanwen Wang & Xingdan Sun & Kenji W, 2023. "Unconventional correlated insulator in CrOCl-interfaced Bernal bilayer graphene," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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