Spin-charge-lattice coupling through resonant multimagnon excitations in multiferroic BiFe O3

M. O. Ramirez, A. Kumar, S. A. Denev, Y. H. Chu, J. Seidel, L. W. Martin, S. Y. Yang, R. C. Rai, X. S. Xue, J. F. Ihlefeld, N. J. Podraza, E. Saiz, S. Lee, J. Klug, S. W. Cheong, M. J. Bedzyk, O. Auciello, D. G. Schlom, J. Orenstein, R. RameshJ. L. Musfeldt, A. P. Litvinchuk, V. Gopalan

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Abstract

Spin-charge-lattice coupling mediated by multimagnon processes is demonstrated in multiferroic BiFe O3. Experimental evidence of two- and three-magnon excitations as well as multimagnon coupling at electronic energy scales and high temperatures are reported. Temperature dependent Raman experiments show up to five resonant enhancements of the two-magnon excitation below the Ńel temperature. These are shown to be collective interactions between on-site Fe d-d electronic resonance, phonons, and multimagnons.

Original languageEnglish (US)
Article number161905
JournalApplied Physics Letters
Volume94
Issue number16
DOIs
StatePublished - May 6 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Ramirez, M. O., Kumar, A., Denev, S. A., Chu, Y. H., Seidel, J., Martin, L. W., Yang, S. Y., Rai, R. C., Xue, X. S., Ihlefeld, J. F., Podraza, N. J., Saiz, E., Lee, S., Klug, J., Cheong, S. W., Bedzyk, M. J., Auciello, O., Schlom, D. G., Orenstein, J., ... Gopalan, V. (2009). Spin-charge-lattice coupling through resonant multimagnon excitations in multiferroic BiFe O3. Applied Physics Letters, 94(16), [161905]. https://doi.org/10.1063/1.3118576