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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48 Scopus citations

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 - 2009

Funding

We acknowledge funding from the National Science Foundation Grant Nos. DMR-0512165, DMR-0507146, DMR-0820404, DMR-0507146, DMR-0820404, and DMR-0602986, DMR-0520513,DMR-0213623,and DMR-0520471 the MSD, BES U.S. Department of Energy under Contract Nos. DE-AC02-05CH11231 and DE-FG02-01ER45885 and the DOE/BES under Contract No. DE-AC02-06CH11357.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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