학술논문
Spin-Charge-Lattice Coupling through Resonant Multi-Magnon Excitations in Multiferroic BiFeO3
Document Type
Working Paper
Author
Ramirez, M. O.; Kumar, A.; Denev, S. A.; Chu, Y. H.; Seidel, J.; Martin, L.; Rai, S-Y. Yang R. C.; Xue, X.; Ihlefeld, J. F.; Podraza, N.; Saiz, E.; Lee, S.; Klug, J.; Cheong, S. W.; Bedzyk, M. J.; Auciello, O.; Schlom, D. G.; Orenstein, J.; Ramesh, R.; Musfeldt, J. L.; Litvinchuk, A. P.; Gopalan, V.
Source
Subject
Language
Abstract
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
Comment: 11 pages including figures
Comment: 11 pages including figures