IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v4y2013i1d10.1038_ncomms3134.html
   My bibliography  Save this article

Spin injection and detection in lanthanum- and niobium-doped SrTiO3 using the Hanle technique

Author

Listed:
  • Wei Han

    (IBM Almaden Research Center)

  • Xin Jiang

    (IBM Almaden Research Center)

  • Adam Kajdos

    (University of California)

  • See-Hun Yang

    (IBM Almaden Research Center)

  • Susanne Stemmer

    (University of California)

  • Stuart S. P. Parkin

    (IBM Almaden Research Center)

Abstract

There has been much interest in the injection and detection of spin-polarized carriers in semiconductors for the purposes of developing novel spintronic devices. Here we report the electrical injection and detection of spin-polarized carriers into Nb-doped strontium titanate single crystals and La-doped strontium titanate epitaxial thin films using MgO tunnel barriers and the three-terminal Hanle technique. Spin lifetimes of up to ~100 ps are measured at room temperature and vary little as the temperature is decreased to low temperatures. However, the mobility of the strontium titanate has a strong temperature dependence. This behaviour and the carrier doping dependence of the spin lifetime suggest that the spin lifetime is limited by spin-dependent scattering at the MgO/strontium titanate interfaces, perhaps related to the formation of doping induced Ti3+. Our results reveal a severe limitation of the three-terminal Hanle technique for measuring spin lifetimes within the interior of the subject material.

Suggested Citation

  • Wei Han & Xin Jiang & Adam Kajdos & See-Hun Yang & Susanne Stemmer & Stuart S. P. Parkin, 2013. "Spin injection and detection in lanthanum- and niobium-doped SrTiO3 using the Hanle technique," Nature Communications, Nature, vol. 4(1), pages 1-6, October.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3134
    DOI: 10.1038/ncomms3134
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms3134
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms3134?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. Jiawei Zhou & Hangtian Zhu & Qichen Song & Zhiwei Ding & Jun Mao & Zhifeng Ren & Gang Chen, 2022. "Mobility enhancement in heavily doped semiconductors via electron cloaking," Nature Communications, Nature, vol. 13(1), pages 1-10, 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:4:y:2013:i:1:d:10.1038_ncomms3134. 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.