Quantum Hall transport as a probe of capacitance profile at graphene edges

  • I. J. Vera-Marun
    Zernike Institute for Advanced Materials, University of Groningen 1 Physics of Nanodevices, , Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • P. J. Zomer
    Zernike Institute for Advanced Materials, University of Groningen 1 Physics of Nanodevices, , Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • A. Veligura
    Zernike Institute for Advanced Materials, University of Groningen 1 Physics of Nanodevices, , Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • M. H. D. Guimarães
    Zernike Institute for Advanced Materials, University of Groningen 1 Physics of Nanodevices, , Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • L. Visser
    Zernike Institute for Advanced Materials, University of Groningen 1 Physics of Nanodevices, , Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • N. Tombros
    Zernike Institute for Advanced Materials, University of Groningen 1 Physics of Nanodevices, , Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • H. J. van Elferen
    High Field Magnet Laboratory, Institute for Molecules and Materials, Radboud University Nijmegen 2 , Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
  • U. Zeitler
    High Field Magnet Laboratory, Institute for Molecules and Materials, Radboud University Nijmegen 2 , Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
  • B. J. van Wees
    Zernike Institute for Advanced Materials, University of Groningen 1 Physics of Nanodevices, , Nijenborgh 4, 9747 AG Groningen, The Netherlands

書誌事項

公開日
2013-01-04
DOI
  • 10.1063/1.4773589
公開者
AIP Publishing

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説明

<jats:p>The quantum Hall effect is a remarkable manifestation of quantized transport in a two-dimensional electron gas (2DEG). Given its technological relevance, it is important to understand its development in realistic nanoscale devices. In this work, we present how the appearance of different edge channels in a field-effect device is influenced by the inhomogeneous capacitance profile existing near the sample edges, a condition of particular relevance for graphene. We apply this practical idea to experiments on high quality graphene, demonstrating the potential of quantum Hall transport as a spatially resolved probe of density profiles near the edge of this two-dimensional electron gas.</jats:p>

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