IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v12y2021i1d10.1038_s41467-021-21792-2.html
   My bibliography  Save this article

Hyperbolic enhancement of photocurrent patterns in minimally twisted bilayer graphene

Author

Listed:
  • S. S. Sunku

    (Columbia University
    Columbia University)

  • D. Halbertal

    (Columbia University)

  • T. Stauber

    (Departamento de Teoría y Simulación de Materiales, Instituto de Ciencia de Materiales de Madrid, CSIC)

  • S. Chen

    (Columbia University)

  • A. S. McLeod

    (Columbia University)

  • A. Rikhter

    (University of California, San Diego)

  • M. E. Berkowitz

    (Columbia University)

  • C. F. B. Lo

    (Columbia University)

  • D. E. Gonzalez-Acevedo

    (Columbia University)

  • J. C. Hone

    (Columbia University)

  • C. R. Dean

    (Columbia University)

  • M. M. Fogler

    (University of California, San Diego)

  • D. N. Basov

    (Columbia University)

Abstract

Quasi-periodic moiré patterns and their effect on electronic properties of twisted bilayer graphene have been intensely studied. At small twist angle θ, due to atomic reconstruction, the moiré superlattice morphs into a network of narrow domain walls separating micron-scale AB and BA stacking regions. We use scanning probe photocurrent imaging to resolve nanoscale variations of the Seebeck coefficient occurring at these domain walls. The observed features become enhanced in a range of mid-infrared frequencies where the hexagonal boron nitride substrate is optically hyperbolic. Our results illustrate the capabilities of the nano-photocurrent technique for probing nanoscale electronic inhomogeneities in two-dimensional materials.

Suggested Citation

  • S. S. Sunku & D. Halbertal & T. Stauber & S. Chen & A. S. McLeod & A. Rikhter & M. E. Berkowitz & C. F. B. Lo & D. E. Gonzalez-Acevedo & J. C. Hone & C. R. Dean & M. M. Fogler & D. N. Basov, 2021. "Hyperbolic enhancement of photocurrent patterns in minimally twisted bilayer graphene," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21792-2
    DOI: 10.1038/s41467-021-21792-2
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-021-21792-2
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-021-21792-2?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
    ---><---

    Citations

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


    Cited by:

    1. Shuai Zhang & Yang Liu & Zhiyuan Sun & Xinzhong Chen & Baichang Li & S. L. Moore & Song Liu & Zhiying Wang & S. E. Rossi & Ran Jing & Jordan Fonseca & Birui Yang & Yinming Shao & Chun-Ying Huang & Tak, 2023. "Visualizing moiré ferroelectricity via plasmons and nano-photocurrent in graphene/twisted-WSe2 structures," Nature Communications, Nature, vol. 14(1), pages 1-8, 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:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21792-2. 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.