Magnetoelastic distortion of multiferroic BiFeO3 in the canted antiferromagnetic state

T. Room, J. Viirok, L. Peedu, U. Nagel, D. G. Farkas, D. Szaller, V. Kocsis, S. Bordács, I. Kezsmarki, D. L. Kamenskyi, H. Engelkamp, M. Ozerov, D. Smirnov, J. Krzystek, K. Thirunavukkuarasu, Y. Ozaki, Y. Tomioka, T. Ito, T. Datta, R. S. Fishman

Research output: Contribution to journalArticlepeer-review

Abstract

Using THz spectroscopy, we show that the spin-wave spectrum of multiferroic BiFeO3 in its high-field canted antiferromagnetic state is well described by a spin model that violates rhombohedral symmetry. We demonstrate that the monoclinic distortion of the canted antiferromagnetic state is induced by the single-ion magnetoelastic coupling between the lattice and the two nearly antiparallel spins. The revised spin model for BiFeO3 contains two new single-ion anisotropy terms that violate rhombohedral symmetry and depend on the direction of the magnetic field.

Original languageEnglish (US)
Article number214410
JournalPhysical Review B
Volume102
Issue number21
DOIs
StatePublished - Dec 9 2020

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Magnetoelastic distortion of multiferroic BiFeO3 in the canted antiferromagnetic state'. Together they form a unique fingerprint.

Cite this