IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v8y2017i1d10.1038_ncomms15148.html
   My bibliography  Save this article

Field induced spontaneous quasiparticle decay and renormalization of quasiparticle dispersion in a quantum antiferromagnet

Author

Listed:
  • Tao Hong

    (Oak Ridge National Laboratory)

  • Y. Qiu

    (National Institute of Standards and Technology)

  • M. Matsumoto

    (Shizuoka University)

  • D. A. Tennant

    (Oak Ridge National Laboratory)

  • K. Coester

    (Lehrstuhl für Theoretische Physik I, TU Dortmund)

  • K. P. Schmidt

    (Lehrstuhl für Theoretische Physik I)

  • F. F. Awwadi

    (The University of Jordan)

  • M. M. Turnbull

    (Carlson School of Chemistry and Biochemistry, Clark University)

  • H. Agrawal

    (Oak Ridge National Laboratory)

  • A. L. Chernyshev

    (University of California)

Abstract

The notion of a quasiparticle, such as a phonon, a roton or a magnon, is used in modern condensed matter physics to describe an elementary collective excitation. The intrinsic zero-temperature magnon damping in quantum spin systems can be driven by the interaction of the one-magnon states and multi-magnon continuum. However, detailed experimental studies on this quantum many-body effect induced by an applied magnetic field are rare. Here we present a high-resolution neutron scattering study in high fields on an S=1/2 antiferromagnet C9H18N2CuBr4. Compared with the non-interacting linear spin–wave theory, our results demonstrate a variety of phenomena including field-induced renormalization of one-magnon dispersion, spontaneous magnon decay observed via intrinsic linewidth broadening, unusual non-Lorentzian two-peak structure in the excitation spectra and a dramatic shift of spectral weight from one-magnon state to the two-magnon continuum.

Suggested Citation

  • Tao Hong & Y. Qiu & M. Matsumoto & D. A. Tennant & K. Coester & K. P. Schmidt & F. F. Awwadi & M. M. Turnbull & H. Agrawal & A. L. Chernyshev, 2017. "Field induced spontaneous quasiparticle decay and renormalization of quasiparticle dispersion in a quantum antiferromagnet," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
  • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15148
    DOI: 10.1038/ncomms15148
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms15148
    File Function: Abstract
    Download Restriction: no

    File URL: https://libkey.io/10.1038/ncomms15148?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. Xiaojian Bai & Shang-Shun Zhang & Hao Zhang & Zhiling Dun & W. Adam Phelan & V. Ovidiu Garlea & Martin Mourigal & Cristian D. Batista, 2023. "Instabilities of heavy magnons in an anisotropic magnet," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Kirill Yu. Povarov & David E. Graf & Andreas Hauspurg & Sergei Zherlitsyn & Joachim Wosnitza & Takahiro Sakurai & Hitoshi Ohta & Shojiro Kimura & Hiroyuki Nojiri & V. Ovidiu Garlea & Andrey Zheludev &, 2024. "Pressure-tuned quantum criticality in the large-D antiferromagnet DTN," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    3. Tao Hong & Tao Ying & Qing Huang & Sachith E. Dissanayake & Yiming Qiu & Mark M. Turnbull & Andrey A. Podlesnyak & Yan Wu & Huibo Cao & Yaohua Liu & Izuru Umehara & Jun Gouchi & Yoshiya Uwatoko & Masa, 2022. "Evidence for pressure induced unconventional quantum criticality in the coupled spin ladder antiferromagnet C9H18N2CuBr4," Nature Communications, Nature, vol. 13(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:8:y:2017:i:1:d:10.1038_ncomms15148. 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.