IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v5y2014i1d10.1038_ncomms5453.html
   My bibliography  Save this article

Excitonic quasiparticles in a spin–orbit Mott insulator

Author

Listed:
  • Jungho Kim

    (Advanced Photon Source, Argonne National Laboratory)

  • M. Daghofer

    (Institute for Theoretical Solid State Physics, IFW Dresden)

  • A. H. Said

    (Advanced Photon Source, Argonne National Laboratory)

  • T. Gog

    (Advanced Photon Source, Argonne National Laboratory)

  • J. van den Brink

    (Institute for Theoretical Solid State Physics, IFW Dresden)

  • G. Khaliullin

    (Max Planck Institute for Solid State Research, Heisenbergstraße 1)

  • B. J. Kim

    (Max Planck Institute for Solid State Research, Heisenbergstraße 1
    Argonne National Laboratory)

Abstract

In condensed matter systems, out of a large number of interacting degrees of freedom emerge weakly coupled quasiparticles (QPs), in terms of which most physical properties are described. The lack of identification of such QPs is a major barrier for understanding myriad exotic properties of correlated electrons, such as unconventional superconductivity and non-Fermi liquid behaviours. Here we report the observation of a composite particle in a quasi-two-dimensional spin–1/2 antiferromagnet Sr2IrO4—an exciton dressed with magnons—that propagates with the canonical characteristics of a QP: a finite QP residue and a lifetime longer than the hopping time scale. The dynamics of this charge-neutral excitation mirrors the fundamental process of the analogous one-hole propagation in the background of spins–1/2, and reveals the same intrinsic dynamics that is obscured for a single, charged-hole doped into two-dimensional cuprates.

Suggested Citation

  • Jungho Kim & M. Daghofer & A. H. Said & T. Gog & J. van den Brink & G. Khaliullin & B. J. Kim, 2014. "Excitonic quasiparticles in a spin–orbit Mott insulator," Nature Communications, Nature, vol. 5(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5453
    DOI: 10.1038/ncomms5453
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms5453
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms5453?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. Sujan Shrestha & Maryam Souri & Christopher J. Dietl & Ekaterina M. Pärschke & Maximilian Krautloher & Gabriel A. Calderon Ortiz & Matteo Minola & Xiatong Shi & Alexander V. Boris & Jinwoo Hwang & Gin, 2025. "Tunable magnons of an antiferromagnetic Mott insulator via interfacial metal-insulator transitions," Nature Communications, Nature, vol. 16(1), pages 1-7, 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:5:y:2014:i:1:d:10.1038_ncomms5453. 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.