Magnetic structure of the antiferromagnetic half-Heusler compound NdBiPt

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • R. A. Müller - , University of Montreal (Author)
  • A. Desilets-Benoit - , University of Montreal (Author)
  • N. Gauthier - , University of Montreal, Paul Scherrer Institute (Author)
  • L. Lapointe - , University of Montreal (Author)
  • A. D. Bianchi - , University of Montreal (Author)
  • T. Maris - , University of Montreal (Author)
  • R. Zahn - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • R. Beyer - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • E. Green - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • J. Wosnitza - , Chair of Physics of High Magnetic Fields, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Z. Yamani - , National Research Council of Canada (Author)
  • M. Kenzelmann - , Paul Scherrer Institute (Author)

Abstract

We present results of single-crystal neutron-diffraction experiments on the rare-earth, half-Heusler antiferromagnet (AFM) NdBiPt. This compound exhibits an AFM phase transition at TN= 2.18 K with an ordered moment of 1.78(9) μBper Nd atom. The magnetic moments are aligned along the [001] direction, arranged in a type-I AFM structure with ferromagnetic planes, alternating antiferromagnetically along a propagation vector τ of (100). The R BiPt (R = Ce-Lu) family of materials has been proposed as candidates for a new family of antiferromagnetic topological insulators (AFTIs) with a magnetic space group that corresponds to a type-II AFM structure where ferromagnetic sheets are stacked along the space diagonal. The resolved structure makes it unlikely that NdBiPt qualifies as an AFTI.

Details

Original languageEnglish
Article number184432
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number18
Publication statusPublished - 2015
Peer-reviewedYes