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

Publication Type:

Journal Article

Source:

Applied Physics Letters, Volume 94, Number 16 (2009)

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. © 2009 American Institute of Physics.

Notes:

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