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Anomalous electronic transport in high-mobility Corbino rings

Author

Listed:
  • Sujatha Vijayakrishnan

    (McGill University)

  • F. Poitevin

    (McGill University)

  • Oulin Yu

    (McGill University)

  • Z. Berkson-Korenberg

    (McGill University)

  • M. Petrescu

    (McGill University)

  • M. P. Lilly

    (Sandia National Laboratories)

  • T. Szkopek

    (McGill University)

  • Kartiek Agarwal

    (McGill University)

  • K. W. West

    (Princeton University)

  • L. N. Pfeiffer

    (Princeton University)

  • G. Gervais

    (McGill University)

Abstract

We report low-temperature electronic transport measurements performed in two multi-terminal Corbino samples formed in GaAs/Al-GaAs two-dimensional electron gases (2DEG) with both ultra-high electron mobility ( ≳ 20 × 106 cm2/ Vs) and with distinct electron density of 1.7 and 3.6 × 1011 cm−2. In both Corbino samples, a non-monotonic behavior is observed in the temperature dependence of the resistance below 1 K. Surprisingly, a sharp decrease in resistance is observed with increasing temperature in the sample with lower electron density, whereas an opposite behavior is observed in the sample with higher density. To investigate further, transport measurements were performed in large van der Pauw samples having identical heterostructures, and as expected they exhibit resistivity that is monotonic with temperature. Finally, we discuss the results in terms of various lengthscales leading to ballistic and hydrodynamic electronic transport, as well as a possible Gurzhi effect.

Suggested Citation

  • Sujatha Vijayakrishnan & F. Poitevin & Oulin Yu & Z. Berkson-Korenberg & M. Petrescu & M. P. Lilly & T. Szkopek & Kartiek Agarwal & K. W. West & L. N. Pfeiffer & G. Gervais, 2023. "Anomalous electronic transport in high-mobility Corbino rings," Nature Communications, Nature, vol. 14(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-39526-x
    DOI: 10.1038/s41467-023-39526-x
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    1. Lev V. Levitin & Harriet van der Vliet & Terje Theisen & Stefanos Dimitriadis & Marijn Lucas & Antonio D. Corcoles & Ján Nyéki & Andrew J. Casey & Graham Creeth & Ian Farrer & David A. Ritchie & James, 2022. "Cooling low-dimensional electron systems into the microkelvin regime," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. J. Gooth & F. Menges & N. Kumar & V. Süβ & C. Shekhar & Y. Sun & U. Drechsler & R. Zierold & C. Felser & B. Gotsmann, 2018. "Thermal and electrical signatures of a hydrodynamic electron fluid in tungsten diphosphide," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    3. Denis A. Bandurin & Andrey V. Shytov & Leonid S. Levitov & Roshan Krishna Kumar & Alexey I. Berdyugin & Moshe Shalom & Irina V. Grigorieva & Andre K. Geim & Gregory Falkovich, 2018. "Fluidity onset in graphene," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
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