• Featured in Physics
  • Editors' Suggestion
  • Go Mobile »
  • Access by TU Wien Bibliothek

Phonon Magnetochiral Effect

T. Nomura, X.-X. Zhang, S. Zherlitsyn, J. Wosnitza, Y. Tokura, N. Nagaosa, and S. Seki
Phys. Rev. Lett. 122, 145901 – Published 10 April 2019
Physics logo See Viewpoint: Phonons Hum a Magnetochiral Tune

Abstract

The magnetochiral effect (MCE) of phonons, a nonreciprocal acoustic propagation arising due to symmetry principles, is demonstrated in the chiral-lattice ferrimagnet Cu2OSeO3. Our high-resolution ultrasound experiments reveal that the sound velocity differs for parallel and antiparallel propagation with respect to the external magnetic field. The sign of the nonreciprocity depends on the chirality of the crystal in accordance with the selection rule of the MCE. The nonreciprocity is enhanced below the magnetic ordering temperature and at higher ultrasound frequencies, which is quantitatively explained by a proposed magnon-phonon hybridization mechanism.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 26 September 2018

DOI:https://doi.org/10.1103/PhysRevLett.122.145901

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter & Materials Physics

Viewpoint

Key Image

Phonons Hum a Magnetochiral Tune

Published 10 April 2019

A chiral material exposed to a magnetic field allows phonons to travel faster in one direction than another, an effect that might be used to create an acoustic diode.

See more in Physics

Authors & Affiliations

T. Nomura1,*, X.-X. Zhang2,3,*, S. Zherlitsyn1, J. Wosnitza1,4, Y. Tokura2,5, N. Nagaosa2,5, and S. Seki2,5,6

  • 1Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
  • 2Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan
  • 3Quantum Matter Institute, University of British Columbia, Vancouver BC V6T 1Z4, Canada
  • 4Institut für Festkörper-und Materialphysik, TU-Dresden, 01062 Dresden, Germany
  • 5RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
  • 6Institute of Engineering Innovation, The University of Tokyo, Tokyo 113-8656, Japan

  • *These two authors contributed equally

Article Text

Click to Expand

Supplemental Material

Click to Expand

References

Click to Expand
Issue

Vol. 122, Iss. 14 — 12 April 2019

Reuse & Permissions
Access Options
CHORUS

Article part of CHORUS

Announcement
Information on SCOAP3 and Physical Review journals
January 3, 2018

High Energy Physics (HEP) papers published after January 1, 2018 in Physical Review Letters, Physical Review C, and Physical Review D are published open access, paid for centrally by SCOAP3. Library subscriptions will be modified accordingly. This arrangement will initially last for two years, up to the end of 2019.

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×