IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v13y2022i1d10.1038_s41467-022-31953-6.html
   My bibliography  Save this article

Competing electronic states emerging on polar surfaces

Author

Listed:
  • Michele Reticcioli

    (University of Vienna, Faculty of Physics, Center for Computational Materials Science
    Technische Universität Wien)

  • Zhichang Wang

    (Technische Universität Wien
    Xiamen University)

  • Michael Schmid

    (Technische Universität Wien)

  • Dominik Wrana

    (Charles University)

  • Lynn A. Boatner

    (Oak Ridge National Laboratory)

  • Ulrike Diebold

    (Technische Universität Wien)

  • Martin Setvin

    (Technische Universität Wien
    Charles University)

  • Cesare Franchini

    (University of Vienna, Faculty of Physics, Center for Computational Materials Science
    Università di Bologna)

Abstract

Excess charge on polar surfaces of ionic compounds is commonly described by the two-dimensional electron gas (2DEG) model, a homogeneous distribution of charge, spatially-confined in a few atomic layers. Here, by combining scanning probe microscopy with density functional theory calculations, we show that excess charge on the polar TaO2 termination of KTaO3(001) forms more complex electronic states with different degrees of spatial and electronic localization: charge density waves (CDW) coexist with strongly-localized electron polarons and bipolarons. These surface electronic reconstructions, originating from the combined action of electron-lattice interaction and electronic correlation, are energetically more favorable than the 2DEG solution. They exhibit distinct spectroscopy signals and impact on the surface properties, as manifested by a local suppression of ferroelectric distortions.

Suggested Citation

  • Michele Reticcioli & Zhichang Wang & Michael Schmid & Dominik Wrana & Lynn A. Boatner & Ulrike Diebold & Martin Setvin & Cesare Franchini, 2022. "Competing electronic states emerging on polar surfaces," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31953-6
    DOI: 10.1038/s41467-022-31953-6
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-022-31953-6
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-022-31953-6?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. Chao Yang & Rebecca Pons & Wilfried Sigle & Hongguang Wang & Eva Benckiser & Gennady Logvenov & Bernhard Keimer & Peter A. Aken, 2024. "Direct observation of strong surface reconstruction in partially reduced nickelate films," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Lorenzo Celiberti & Dario Fiore Mosca & Giuseppe Allodi & Leonid V. Pourovskii & Anna Tassetti & Paola Caterina Forino & Rong Cong & Erick Garcia & Phuong M. Tran & Roberto De Renzi & Patrick M. Woodw, 2024. "Spin-orbital Jahn-Teller bipolarons," Nature Communications, Nature, vol. 15(1), pages 1-9, 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:13:y:2022:i:1:d:10.1038_s41467-022-31953-6. 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.