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Magnetotransport in single-layer graphene in a large parallel magnetic field

机译：大平行磁场中单层石墨烯的磁传输

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摘要

Graphene on hexagonal boron nitride (h-BN) is an atomically flat conducting system that is ideally suited for probing the effect of Zeeman splitting on electron transport. We demonstrate by magnetotransport measurements that a parallel magnetic field up to 30 Tesla does not affect the transport properties of graphene on h-BN even at charge neutrality where such an effect is expected to be maximal. The only magnetoresistance detected at low carrier concentrations is shown to be associated with a small perpendicular component of the field which cannot be fully eliminated in the experiment. Despite the high mobility of charge carriers at low temperatures, we argue that the effects of Zeeman splitting are fully masked by electrostatic potential fluctuations at charge neutrality.
机译：六方氮化硼（h-BN）上的石墨烯是原子平坦的导电系统，非常适合探测塞曼分裂对电子传输的影响。我们通过磁传输测量证明，高达30特斯拉的平行磁场不会影响石墨烯在h-BN上的传输性能，即使在电荷中性的情况下，这种影响预计是最大的。显示在低载流子浓度下检测到的唯一磁阻与磁场的垂直分量有关，在实验中无法完全消除。尽管低温下电荷载流子具有高迁移率，但我们认为，塞曼分裂的影响被电荷中性时的静电势波动完全掩盖了。

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  • 来源
    《Physical review》 |2016年第8期|085302.1-085302.5|共5页
  • 作者

    F. Chiappini; S. Wiedmann; M. Titov; A. K. Geim; R. V. Gorbachev; E. Khestanova; A. Mishchenko; K. S. Novoselov; J. C. Maan; U. Zeitler;

  • 作者单位

    Radboud University, High Field Magnet Laboratory (HFML-EMFL), NL-6525 ED Nijmegen, The Netherlands,Radboud University, Institute for Molecules and Materials, NL-6525 AJ Nijmegen, The Netherlands;

    Radboud University, High Field Magnet Laboratory (HFML-EMFL), NL-6525 ED Nijmegen, The Netherlands,Radboud University, Institute for Molecules and Materials, NL-6525 AJ Nijmegen, The Netherlands;

    Radboud University, Institute for Molecules and Materials, NL-6525 AJ Nijmegen, The Netherlands;

    School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom;

    School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom;

    School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom;

    School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom;

    School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom;

    Radboud University, High Field Magnet Laboratory (HFML-EMFL), NL-6525 ED Nijmegen, The Netherlands,Radboud University, Institute for Molecules and Materials, NL-6525 AJ Nijmegen, The Netherlands;

    Radboud University, High Field Magnet Laboratory (HFML-EMFL), NL-6525 ED Nijmegen, The Netherlands,Radboud University, Institute for Molecules and Materials, NL-6525 AJ Nijmegen, The Netherlands;

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