IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v493y2013i7434d10.1038_nature11820.html
   My bibliography  Save this article

Hastatic order in the heavy-fermion compound URu2Si2

Author

Listed:
  • Premala Chandra

    (Center for Materials Theory, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854-8019, USA)

  • Piers Coleman

    (Center for Materials Theory, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854-8019, USA
    Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK)

  • Rebecca Flint

    (Massachusetts Institute for Technology, Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA)

Abstract

The development of collective long-range order by means of phase transitions occurs by the spontaneous breaking of fundamental symmetries. Magnetism is a consequence of broken time-reversal symmetry, whereas superfluidity results from broken gauge invariance. The broken symmetry that develops below 17.5 kelvin in the heavy-fermion compound URu2Si2 has long eluded such identification. Here we show that the recent observation of Ising quasiparticles in URu2Si2 results from a spinor order parameter that breaks double time-reversal symmetry, mixing states of integer and half-integer spin. Such ‘hastatic’ order hybridizes uranium-atom conduction electrons with Ising 5f2 states to produce Ising quasiparticles; it accounts for the large entropy of condensation and the magnetic anomaly observed in torque magnetometry. Hastatic order predicts a tiny transverse moment in the conduction-electron ‘sea’, a colossal Ising anisotropy in the nonlinear susceptibility anomaly and a resonant, energy-dependent nematicity in the tunnelling density of states.

Suggested Citation

  • Premala Chandra & Piers Coleman & Rebecca Flint, 2013. "Hastatic order in the heavy-fermion compound URu2Si2," Nature, Nature, vol. 493(7434), pages 621-626, January.
    • Handle: RePEc:nat:nature:v:493:y:2013:i:7434:d:10.1038_nature11820
    DOI: 10.1038/nature11820
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature11820
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature11820?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
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    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:nature:v:493:y:2013:i:7434:d:10.1038_nature11820. 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.