IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v572y2019i7768d10.1038_s41586-019-1402-1.html
   My bibliography  Save this article

Visualizing electrostatic gating effects in two-dimensional heterostructures

Author

Listed:
  • Paul V. Nguyen

    (University of Washington)

  • Natalie C. Teutsch

    (University of Warwick)

  • Nathan P. Wilson

    (University of Washington)

  • Joshua Kahn

    (University of Washington)

  • Xue Xia

    (University of Warwick)

  • Abigail J. Graham

    (University of Warwick)

  • Viktor Kandyba

    (Elettra-Sincrotrone Trieste SCpA)

  • Alessio Giampietri

    (Elettra-Sincrotrone Trieste SCpA)

  • Alexei Barinov

    (Elettra-Sincrotrone Trieste SCpA)

  • Gabriel C. Constantinescu

    (University of Cambridge)

  • Nelson Yeung

    (University of Warwick)

  • Nicholas D. M. Hine

    (University of Warwick)

  • Xiaodong Xu

    (University of Washington
    University of Washington)

  • David H. Cobden

    (University of Washington)

  • Neil R. Wilson

    (University of Warwick)

Abstract

The ability to directly monitor the states of electrons in modern field-effect devices—for example, imaging local changes in the electrical potential, Fermi level and band structure as a gate voltage is applied—could transform our understanding of the physics and function of a device. Here we show that micrometre-scale, angle-resolved photoemission spectroscopy1–3 (microARPES) applied to two-dimensional van der Waals heterostructures4 affords this ability. In two-terminal graphene devices, we observe a shift of the Fermi level across the Dirac point, with no detectable change in the dispersion, as a gate voltage is applied. In two-dimensional semiconductor devices, we see the conduction-band edge appear as electrons accumulate, thereby firmly establishing the energy and momentum of the edge. In the case of monolayer tungsten diselenide, we observe that the bandgap is renormalized downwards by several hundreds of millielectronvolts—approaching the exciton energy—as the electrostatic doping increases. Both optical spectroscopy and microARPES can be carried out on a single device, allowing definitive studies of the relationship between gate-controlled electronic and optical properties. The technique provides a powerful way to study not only fundamental semiconductor physics, but also intriguing phenomena such as topological transitions5 and many-body spectral reconstructions under electrical control.

Suggested Citation

  • Paul V. Nguyen & Natalie C. Teutsch & Nathan P. Wilson & Joshua Kahn & Xue Xia & Abigail J. Graham & Viktor Kandyba & Alessio Giampietri & Alexei Barinov & Gabriel C. Constantinescu & Nelson Yeung & N, 2019. "Visualizing electrostatic gating effects in two-dimensional heterostructures," Nature, Nature, vol. 572(7768), pages 220-223, August.
  • Handle: RePEc:nat:nature:v:572:y:2019:i:7768:d:10.1038_s41586-019-1402-1
    DOI: 10.1038/s41586-019-1402-1
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41586-019-1402-1
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.

    File URL: https://libkey.io/10.1038/s41586-019-1402-1?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Søren Ulstrup & Yann in ’t Veld & Jill A. Miwa & Alfred J. H. Jones & Kathleen M. McCreary & Jeremy T. Robinson & Berend T. Jonker & Simranjeet Singh & Roland J. Koch & Eli Rotenberg & Aaron Bostwick , 2024. "Observation of interlayer plasmon polaron in graphene/WS2 heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Zhenglong Fan & Fan Liao & Yujin Ji & Yang Liu & Hui Huang & Dan Wang & Kui Yin & Haiwei Yang & Mengjie Ma & Wenxiang Zhu & Meng Wang & Zhenhui Kang & Youyong Li & Mingwang Shao & Zhiwei Hu & Qi Shao, 2022. "Coupling of nanocrystal hexagonal array and two-dimensional metastable substrate boosts H2-production," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    3. Hongyun Zhang & Qian Li & Youngju Park & Yujin Jia & Wanying Chen & Jiaheng Li & Qinxin Liu & Changhua Bao & Nicolas Leconte & Shaohua Zhou & Yuan Wang & Kenji Watanabe & Takashi Taniguchi & Jose Avil, 2024. "Observation of dichotomic field-tunable electronic structure in twisted monolayer-bilayer graphene," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:572:y:2019:i:7768:d:10.1038_s41586-019-1402-1. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.