IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v6y2015i1d10.1038_ncomms10042.html
   My bibliography  Save this article

Quadratic Fermi node in a 3D strongly correlated semimetal

Author

Listed:
  • Takeshi Kondo

    (ISSP, University of Tokyo)

  • M. Nakayama

    (ISSP, University of Tokyo)

  • R. Chen

    (University of California
    University of California
    Molecular Foundry, Lawrence Berkeley National Laboratory)

  • J. J. Ishikawa

    (ISSP, University of Tokyo)

  • E.-G. Moon

    (University of California
    Korea Advanced Institute of Science and Technology)

  • T. Yamamoto

    (ISSP, University of Tokyo)

  • Y. Ota

    (ISSP, University of Tokyo)

  • W. Malaeb

    (ISSP, University of Tokyo
    Faculty of Science, Beirut Arab University, P. O. Box 11-5020)

  • H. Kanai

    (ISSP, University of Tokyo)

  • Y. Nakashima

    (ISSP, University of Tokyo)

  • Y. Ishida

    (ISSP, University of Tokyo)

  • R. Yoshida

    (ISSP, University of Tokyo)

  • H. Yamamoto

    (ISSP, University of Tokyo)

  • M. Matsunami

    (UVSOR Facility, Institute for Molecular Science
    Energy Materials Laboratory, Toyota Technological Institute)

  • S. Kimura

    (UVSOR Facility, Institute for Molecular Science
    Graduate School of Frontier Biosciences, Osaka University)

  • N. Inami

    (Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK))

  • K. Ono

    (Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK))

  • H. Kumigashira

    (Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK))

  • S. Nakatsuji

    (ISSP, University of Tokyo
    PRESTO, Japan Science and Technology Agency (JST))

  • L. Balents

    (Kavli Institute for Theoretical Physics)

  • S. Shin

    (ISSP, University of Tokyo)

Abstract

Strong spin–orbit coupling fosters exotic electronic states such as topological insulators and superconductors, but the combination of strong spin–orbit and strong electron–electron interactions is just beginning to be understood. Central to this emerging area are the 5d transition metal iridium oxides. Here, in the pyrochlore iridate Pr2Ir2O7, we identify a non-trivial state with a single-point Fermi node protected by cubic and time-reversal symmetries, using a combination of angle-resolved photoemission spectroscopy and first-principles calculations. Owing to its quadratic dispersion, the unique coincidence of four degenerate states at the Fermi energy, and strong Coulomb interactions, non-Fermi liquid behaviour is predicted, for which we observe some evidence. Our discovery implies that Pr2Ir2O7 is a parent state that can be manipulated to produce other strongly correlated topological phases, such as topological Mott insulator, Weyl semimetal, and quantum spin and anomalous Hall states.

Suggested Citation

  • Takeshi Kondo & M. Nakayama & R. Chen & J. J. Ishikawa & E.-G. Moon & T. Yamamoto & Y. Ota & W. Malaeb & H. Kanai & Y. Nakashima & Y. Ishida & R. Yoshida & H. Yamamoto & M. Matsunami & S. Kimura & N. , 2015. "Quadratic Fermi node in a 3D strongly correlated semimetal," Nature Communications, Nature, vol. 6(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms10042
    DOI: 10.1038/ncomms10042
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms10042
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms10042?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. Lun-Hui Hu & Rui-Xing Zhang, 2023. "Topological superconducting vortex from trivial electronic bands," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Taiki Uehara & Takumi Ohtsuki & Masafumi Udagawa & Satoru Nakatsuji & Yo Machida, 2022. "Phonon thermal Hall effect in a metallic spin ice," Nature Communications, Nature, vol. 13(1), pages 1-8, 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:6:y:2015:i:1:d:10.1038_ncomms10042. 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.