IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v5y2014i1d10.1038_ncomms4161.html
   My bibliography  Save this article

Homoepitaxial tunnel barriers with functionalized graphene-on-graphene for charge and spin transport

Author

Listed:
  • Adam L. Friedman

    (US Naval Research Laboratory)

  • Olaf M. J. van ‘t Erve

    (US Naval Research Laboratory)

  • Connie H. Li

    (US Naval Research Laboratory)

  • Jeremy T. Robinson

    (US Naval Research Laboratory)

  • Berend T. Jonker

    (US Naval Research Laboratory)

Abstract

The coupled imperatives for reduced heat dissipation and power consumption in high-density electronics have rekindled interest in devices based on tunnelling. Such devices require mating dissimilar materials, raising issues of heteroepitaxy, layer uniformity, interface stability and electronic states that severely complicate fabrication and compromise performance. Two-dimensional materials such as graphene obviate these issues and offer a new paradigm for tunnel barriers. Here we demonstrate a homoepitaxial tunnel barrier structure in which graphene serves as both the tunnel barrier and the high-mobility transport channel. We fluorinate the top layer of a graphene bilayer to decouple it from the bottom layer, so that it serves as a single-monolayer tunnel barrier for both charge and spin injection into the lower graphene channel. We demonstrate high spin injection efficiency with a tunnelling spin polarization >60%, lateral transport of spin currents in non-local spin-valve structures and determine spin lifetimes with the Hanle effect.

Suggested Citation

  • Adam L. Friedman & Olaf M. J. van ‘t Erve & Connie H. Li & Jeremy T. Robinson & Berend T. Jonker, 2014. "Homoepitaxial tunnel barriers with functionalized graphene-on-graphene for charge and spin transport," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
  • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4161
    DOI: 10.1038/ncomms4161
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms4161
    File Function: Abstract
    Download Restriction: no

    File URL: https://libkey.io/10.1038/ncomms4161?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
    ---><---

    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:5:y:2014:i:1:d:10.1038_ncomms4161. 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.