IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v1y2010i1d10.1038_ncomms1111.html
   My bibliography  Save this article

Dimensionality-driven insulator–metal transition in A-site excess non-stoichiometric perovskites

Author

Listed:
  • Zhongchang Wang

    (World Premier International Research Center, Advanced Institute for Materials Research, Tohoku University)

  • Masaki Okude

    (Institute for Materials Research, Tohoku University)

  • Mitsuhiro Saito

    (World Premier International Research Center, Advanced Institute for Materials Research, Tohoku University)

  • Susumu Tsukimoto

    (World Premier International Research Center, Advanced Institute for Materials Research, Tohoku University)

  • Akira Ohtomo

    (Institute for Materials Research, Tohoku University)

  • Masaru Tsukada

    (World Premier International Research Center, Advanced Institute for Materials Research, Tohoku University)

  • Masashi Kawasaki

    (World Premier International Research Center, Advanced Institute for Materials Research, Tohoku University
    Institute for Materials Research, Tohoku University)

  • Yuichi Ikuhara

    (World Premier International Research Center, Advanced Institute for Materials Research, Tohoku University
    Institute of Engineering Innovation, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan.
    Nanostructures Research Laboratory, Japan Fine Ceramics Center)

Abstract

Coaxing correlated materials to the proximity of the insulator–metal transition region, where electronic wavefunctions transform from localized to itinerant, is currently the subject of intensive research because of the hopes it raises for technological applications and also for its fundamental scientific significance. In general, this tuning is achieved by either chemical doping to introduce charge carriers, or external stimuli to lower the ratio of Coulomb repulsion to bandwidth. In this study, we combine experiment and theory to show that the transition from well-localized insulating states to metallicity in a Ruddlesden-Popper series, La0.5Srn+1−0.5TinO3n+1, is driven by intercalating an intrinsically insulating SrTiO3 unit, in structural terms, by dimensionality n. This unconventional strategy, which can be understood upon a complex interplay between electron–phonon coupling and electron correlations, opens up a new avenue to obtain metallicity or even superconductivity in oxide superlattices that are normally expected to be insulators.

Suggested Citation

  • Zhongchang Wang & Masaki Okude & Mitsuhiro Saito & Susumu Tsukimoto & Akira Ohtomo & Masaru Tsukada & Masashi Kawasaki & Yuichi Ikuhara, 2010. "Dimensionality-driven insulator–metal transition in A-site excess non-stoichiometric perovskites," Nature Communications, Nature, vol. 1(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:1:y:2010:i:1:d:10.1038_ncomms1111
    DOI: 10.1038/ncomms1111
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms1111
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms1111?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. Hye-Sung Kim & Ji-Sang An & Hyung Bin Bae & Sung-Yoon Chung, 2023. "Atomic-scale observation of premelting at 2D lattice defects inside oxide crystals," Nature Communications, Nature, vol. 14(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:1:y:2010:i:1:d:10.1038_ncomms1111. 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.