IDEAS home Printed from https://ideas.repec.org/a/spr/eurphb/v90y2017i6d10.1140_epjb_e2017-70495-y.html
   My bibliography  Save this article

Ab initio exploration of d0 digital magnetic heterostructures: the case of MgO and CaO δ-doped with potassium

Author

Listed:
  • Jiangtao Du

    (Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University)

  • Shengjie Dong

    (Tianjin Normal University)

  • Yi-Lin Lu

    (Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University)

  • Hui Zhao

    (Tianjin Normal University)

  • Liying Wang

    (Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University)

  • Liefeng Feng

    (Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University)

Abstract

Previous studies of digital magnetic heterostructures have mainly focused on 3d transition metal δ-doped semiconductors. In this work, sp-electron digital magnetic heterostructures without magnetic ions are proposed. Based on a theoretical density functional investigation, electronic structures and magnetic properties of MgO and CaO δ-doped with K were reported. The results show that these heterostructures are half-metallic ferromagnetic materials having semiconducting up spins and metallic down spins, with an exchange interaction much stronger than that of a random alloy with similar K concentration. Our first-principles calculations show that the carriers at the Fermi level are strongly confined within a few monolayers around the KO plane. This strong confinement is responsible for the large exchange coupling and the two-dimensional half-metallic behavior. The thickness of the host semiconducting spacer does not significantly change the global electric and magnetic features.

Suggested Citation

  • Jiangtao Du & Shengjie Dong & Yi-Lin Lu & Hui Zhao & Liying Wang & Liefeng Feng, 2017. "Ab initio exploration of d0 digital magnetic heterostructures: the case of MgO and CaO δ-doped with potassium," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 90(6), pages 1-6, June.
    • Handle: RePEc:spr:eurphb:v:90:y:2017:i:6:d:10.1140_epjb_e2017-70495-y
    DOI: 10.1140/epjb/e2017-70495-y
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1140/epjb/e2017-70495-y
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1140/epjb/e2017-70495-y?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.

    More about this item

    Keywords

    Computational Methods;

    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:spr:eurphb:v:90:y:2017:i:6:d:10.1140_epjb_e2017-70495-y. 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.springer.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.