IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v6y2015i1d10.1038_ncomms9035.html
   My bibliography  Save this article

Polarity-tunable magnetic tunnel junctions based on ferromagnetism at oxide heterointerfaces

Author

Listed:
  • Thach D.N. Ngo

    (Korea Research Institute of Standards and Science
    Korea University of Science and Technology)

  • Jung-Won Chang

    (Korea Research Institute of Standards and Science
    Korea University Sejong Campus)

  • Kyujoon Lee

    (Sogang University)

  • Seungju Han

    (Korea University)

  • Joon Sung Lee

    (Korea University Sejong Campus)

  • Young Heon Kim

    (Korea Research Institute of Standards and Science)

  • Myung-Hwa Jung

    (Sogang University)

  • Yong-Joo Doh

    (Korea University Sejong Campus)

  • Mahn-Soo Choi

    (Korea University)

  • Jonghyun Song

    (Chungnam National University)

  • Jinhee Kim

    (Korea Research Institute of Standards and Science)

Abstract

Complex oxide systems have attracted considerable attention because of their fascinating properties, including the magnetic ordering at the conducting interface between two band insulators, such as LaAlO3 and SrTiO3. However, the manipulation of the spin degree of freedom at the LaAlO3/SrTiO3 heterointerface has remained elusive. Here, we have fabricated hybrid magnetic tunnel junctions consisting of Co and LaAlO3/SrTiO3 ferromagnets with the insertion of a Ti layer in between, which clearly exhibit magnetic switching and the tunnelling magnetoresistance effect below 10 K. The magnitude and sign of the tunnelling magnetoresistance are strongly dependent on the direction of the rotational magnetic field parallel to the LaAlO3/SrTiO3 plane, which is attributed to a strong Rashba-type spin-orbit coupling in the LaAlO3/SrTiO3 heterostructure. Our study provides a further support for the existence of the macroscopic ferromagnetism at LaAlO3/SrTiO3 heterointerfaces and opens a novel route to realize interfacial spintronics devices.

Suggested Citation

  • Thach D.N. Ngo & Jung-Won Chang & Kyujoon Lee & Seungju Han & Joon Sung Lee & Young Heon Kim & Myung-Hwa Jung & Yong-Joo Doh & Mahn-Soo Choi & Jonghyun Song & Jinhee Kim, 2015. "Polarity-tunable magnetic tunnel junctions based on ferromagnetism at oxide heterointerfaces," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9035
    DOI: 10.1038/ncomms9035
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms9035
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms9035?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:6:y:2015:i:1:d:10.1038_ncomms9035. 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.