Origin of electromagnon excitations in multiferroic RMnO3

R. Valdés Aguilar, M. Mostovoy, A. B. Sushkov, C. L. Zhang, Y. J. Choi, S. W. Cheong, H. D. Drew

Research output: Contribution to journalArticle

134 Citations (Scopus)

Abstract

Electromagnon excitations in multiferroic orthorhombic RMnO3 are shown to result from the Heisenberg coupling between spins despite the fact that the static polarization arises from the much weaker Dzyaloshinskii-Moriya exchange interaction. We present a model incorporating the structural characteristics of this family of manganites that is confirmed by far infrared transmission data as a function of temperature and magnetic field and inelastic neutron scattering results. A deep connection is found between the magnetoelectric dynamics of the spiral phase and the static magnetoelectric coupling in the collinear E phase of this family of manganites.

Original languageEnglish
Article number047203
JournalPhysical Review Letters
Volume102
Issue number4
DOIs
Publication statusPublished - 2009 Jan 26

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data transmission
excitation
inelastic scattering
neutron scattering
temperature distribution
polarization
magnetic fields
interactions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Valdés Aguilar, R., Mostovoy, M., Sushkov, A. B., Zhang, C. L., Choi, Y. J., Cheong, S. W., & Drew, H. D. (2009). Origin of electromagnon excitations in multiferroic RMnO3. Physical Review Letters, 102(4), [047203]. https://doi.org/10.1103/PhysRevLett.102.047203
Valdés Aguilar, R. ; Mostovoy, M. ; Sushkov, A. B. ; Zhang, C. L. ; Choi, Y. J. ; Cheong, S. W. ; Drew, H. D. / Origin of electromagnon excitations in multiferroic RMnO3. In: Physical Review Letters. 2009 ; Vol. 102, No. 4.
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Valdés Aguilar, R, Mostovoy, M, Sushkov, AB, Zhang, CL, Choi, YJ, Cheong, SW & Drew, HD 2009, 'Origin of electromagnon excitations in multiferroic RMnO3', Physical Review Letters, vol. 102, no. 4, 047203. https://doi.org/10.1103/PhysRevLett.102.047203

Origin of electromagnon excitations in multiferroic RMnO3. / Valdés Aguilar, R.; Mostovoy, M.; Sushkov, A. B.; Zhang, C. L.; Choi, Y. J.; Cheong, S. W.; Drew, H. D.

In: Physical Review Letters, Vol. 102, No. 4, 047203, 26.01.2009.

Research output: Contribution to journalArticle

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AU - Valdés Aguilar, R.

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AB - Electromagnon excitations in multiferroic orthorhombic RMnO3 are shown to result from the Heisenberg coupling between spins despite the fact that the static polarization arises from the much weaker Dzyaloshinskii-Moriya exchange interaction. We present a model incorporating the structural characteristics of this family of manganites that is confirmed by far infrared transmission data as a function of temperature and magnetic field and inelastic neutron scattering results. A deep connection is found between the magnetoelectric dynamics of the spiral phase and the static magnetoelectric coupling in the collinear E phase of this family of manganites.

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Valdés Aguilar R, Mostovoy M, Sushkov AB, Zhang CL, Choi YJ, Cheong SW et al. Origin of electromagnon excitations in multiferroic RMnO3. Physical Review Letters. 2009 Jan 26;102(4). 047203. https://doi.org/10.1103/PhysRevLett.102.047203