Spin wave measurements over the full Brillouin zone of multiferroic BiFeO 3

Jaehong Jeong, E. A. Goremychkin, T. Guidi, K. Nakajima, Gun Sang Jeon, Shin Ae Kim, Shunsuke Furukawa, Yong Baek Kim, Seongsu Lee, V. Kiryukhin, S. W. Cheong, Je Geun Park

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Using the inelastic neutron scattering technique, we measured the spin wave dispersion over the entire Brillouin zone of room temperature multiferroic BiFeO 3 single crystals with magnetic excitations extending to as high as 72.5meV. The full spin waves can be explained by a simple Heisenberg Hamiltonian with a nearest-neighbor exchange interaction (J=4.38meV), a next-nearest-neighbor exchange interaction (J'=0.15meV), and a Dzyaloshinskii-Moriya-like term (D=0.107meV). This simple Hamiltonian determined, for the first time, for BiFeO 3 provides a fundamental ingredient for understanding the novel magnetic properties of BiFeO 3.

Original languageEnglish
Article number077202
JournalPhysical Review Letters
Volume108
Issue number7
DOIs
Publication statusPublished - 2012 Feb 14
Externally publishedYes

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Brillouin zones
magnons
wave dispersion
ingredients
inelastic scattering
neutron scattering
interactions
magnetic properties
single crystals
room temperature
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Jeong, J., Goremychkin, E. A., Guidi, T., Nakajima, K., Jeon, G. S., Kim, S. A., ... Park, J. G. (2012). Spin wave measurements over the full Brillouin zone of multiferroic BiFeO 3 Physical Review Letters, 108(7), [077202]. https://doi.org/10.1103/PhysRevLett.108.077202

Spin wave measurements over the full Brillouin zone of multiferroic BiFeO 3 . / Jeong, Jaehong; Goremychkin, E. A.; Guidi, T.; Nakajima, K.; Jeon, Gun Sang; Kim, Shin Ae; Furukawa, Shunsuke; Kim, Yong Baek; Lee, Seongsu; Kiryukhin, V.; Cheong, S. W.; Park, Je Geun.

In: Physical Review Letters, Vol. 108, No. 7, 077202, 14.02.2012.

Research output: Contribution to journalArticle

Jeong, J, Goremychkin, EA, Guidi, T, Nakajima, K, Jeon, GS, Kim, SA, Furukawa, S, Kim, YB, Lee, S, Kiryukhin, V, Cheong, SW & Park, JG 2012, 'Spin wave measurements over the full Brillouin zone of multiferroic BiFeO 3 ', Physical Review Letters, vol. 108, no. 7, 077202. https://doi.org/10.1103/PhysRevLett.108.077202
Jeong J, Goremychkin EA, Guidi T, Nakajima K, Jeon GS, Kim SA et al. Spin wave measurements over the full Brillouin zone of multiferroic BiFeO 3 Physical Review Letters. 2012 Feb 14;108(7). 077202. https://doi.org/10.1103/PhysRevLett.108.077202
Jeong, Jaehong ; Goremychkin, E. A. ; Guidi, T. ; Nakajima, K. ; Jeon, Gun Sang ; Kim, Shin Ae ; Furukawa, Shunsuke ; Kim, Yong Baek ; Lee, Seongsu ; Kiryukhin, V. ; Cheong, S. W. ; Park, Je Geun. / Spin wave measurements over the full Brillouin zone of multiferroic BiFeO 3 In: Physical Review Letters. 2012 ; Vol. 108, No. 7.
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