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

Publication Type:

Journal Article

Authors:

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; Ramamoorthy Ramesh; J.L. Musfeldt; A.P. Litvinchuk; V. Gopalan

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

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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