IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v8y2017i1d10.1038_ncomms14468.html
   My bibliography  Save this article

Ubiquitous strong electron–phonon coupling at the interface of FeSe/SrTiO3

Author

Listed:
  • Chaofan Zhang

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Zhongkai Liu

    (School of Physical Science and Technology, ShanghaiTech University)

  • Zhuoyu Chen

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Yanwu Xie

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Ruihua He

    (Boston College)

  • Shujie Tang

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Junfeng He

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Wei Li

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Tao Jia

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Slavko N. Rebec

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Eric Yue Ma

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Hao Yan

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Makoto Hashimoto

    (Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory)

  • Donghui Lu

    (Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory)

  • Sung-Kwan Mo

    (Advanced Light Source, Lawrence Berkeley National Laboratory)

  • Yasuyuki Hikita

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory)

  • Robert G. Moore

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Harold Y. Hwang

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

  • Dunghai Lee

    (University of California at Berkeley)

  • Zhixun Shen

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    Geballe Laboratory for Advanced Materials, Stanford University)

Abstract

The observation of replica bands in single-unit-cell FeSe on SrTiO3 (STO)(001) by angle-resolved photoemission spectroscopy (ARPES) has led to the conjecture that the coupling between FeSe electrons and the STO phonons are responsible for the enhancement of Tc over other FeSe-based superconductors. However the recent observation of a similar superconducting gap in single-unit-cell FeSe/STO(110) raised the question of whether a similar mechanism applies. Here we report the ARPES study of the electronic structure of FeSe/STO(110). Similar to the results in FeSe/STO(001), clear replica bands are observed. We also present a comparative study of STO(001) and STO(110) bare surfaces, and observe similar replica bands separated by approximately the same energy, indicating this coupling is a generic feature of the STO surfaces and interfaces. Our findings suggest that the large superconducting gaps observed in FeSe films grown on different STO surface terminations are likely enhanced by a common mechanism.

Suggested Citation

  • Chaofan Zhang & Zhongkai Liu & Zhuoyu Chen & Yanwu Xie & Ruihua He & Shujie Tang & Junfeng He & Wei Li & Tao Jia & Slavko N. Rebec & Eric Yue Ma & Hao Yan & Makoto Hashimoto & Donghui Lu & Sung-Kwan M, 2017. "Ubiquitous strong electron–phonon coupling at the interface of FeSe/SrTiO3," Nature Communications, Nature, vol. 8(1), pages 1-6, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14468
    DOI: 10.1038/ncomms14468
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms14468
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms14468?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:8:y:2017:i:1:d:10.1038_ncomms14468. 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.