Spin-charge-lattice coupling through resonant multimagnon excitations in multiferroic BiFeO{sub 3}.

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Appl. Phys. Lett.

DOI:https://doi.org/10.1063/1.3118576· OSTI ID:958274

Ramirez, M O; Kumar, A; Denev, S A; Chu, Y H; Seidel, J; Martin, L W; Yang, S -Y; Rai, R C; Xue, X S; Ihlefeld, J F; Podraza, N J; 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; LBNL,

Spin-charge-lattice coupling mediated by multimagnon processes is demonstrated in multiferroic BiFeO{sub 3}. 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 Neel temperature. These are shown to be collective interactions between on-site Fe d-d electronic resonance, phonons, and multimagnons.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 958274
• Report Number(s): ANL/MSD/JA-64554; APPLAB; TRN: US1000190
• Journal Information: Appl. Phys. Lett., Vol. 94, Issue 2009; ISSN 0003-6951
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
EXCITATION
NEEL TEMPERATURE
PHONONS
RESONANCE