Publication Type:Journal Article
Source:Applied Physics Letters, Volume 94, Number 16 (2009)
Keywords:Electronic energies, Electronic resonances, Experimental evidences, High temperatures, Magnon excitations, multiferroic, Ozone water treatment, Resonant enhancements, spin dynamics, Spin-charge-lattice couplings, Strontium compounds, Temperature-dependent raman
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. © 2009 American Institute of Physics.
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