Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2008-03-24
Physics
Condensed Matter
Other Condensed Matter
11 pages including figures
Scientific paper
Spin-charge-lattice coupling mediated by multi-magnon processes is demonstrated in multiferroic BiFeO3. Experimental evidence of two and three magnons 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 2-magnon excitation below the Neel temperature. These are shown to be collective interactions between on-site Fe d-d electronic resonance, phonons and multimagnons
Auciello O.
Bedzyk Michael J.
Cheong Sang-Wook
Chu Y.-H. Y.-H.
Denev S. A.
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