Spin-Charge-Lattice Coupling through Resonant Multi-Magnon Excitations in Multiferroic BiFeO3

M. O. Ramirez; A. Kumar; S. A. Denev; Y. H. Chu; J. Seidel; L. Martin; S-Y. Yang R. C. Rai; X. Xue; J. F. Ihlefeld; N. Podraza; E. Saiz; S. Lee; J. Klug; S. W. Cheong; M. J. Bedzyk; O. Auciello; D. G. Schlom; J. Orenstein; R. Ramesh; J. L. Musfeldt; A. P. Litvinchuk; V. Gopalan

doi:10.1063/1.3118576

Spin-Charge-Lattice Coupling through Resonant Multi-Magnon Excitations in Multiferroic BiFeO3

Other Condensed Matter 2015-05-13 v2

Authors: M. O. Ramirez , A. Kumar , S. A. Denev , Y. H. Chu , J. Seidel , L. Martin , S-Y. Yang R. C. Rai , X. Xue , J. F. Ihlefeld , N. Podraza , E. Saiz , S. Lee , J. Klug , S. W. Cheong , M. J. Bedzyk , O. Auciello , D. G. Schlom , J. Orenstein , R. Ramesh , J. L. Musfeldt , A. P. Litvinchuk , V. Gopalan

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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

Keywords

magnetic materials and spin systems spin excitations in condensed matter magnetism

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@article{arxiv.0803.3473,
  title  = {Spin-Charge-Lattice Coupling through Resonant Multi-Magnon Excitations in Multiferroic BiFeO3},
  author = {M. O. Ramirez and A. Kumar and S. A. Denev and Y. H. Chu and J. Seidel and L. Martin and S-Y. Yang R. C. Rai and X. Xue and J. F. Ihlefeld and N. Podraza and E. Saiz and S. Lee and J. Klug and S. W. Cheong and M. J. Bedzyk and O. Auciello and D. G. Schlom and J. Orenstein and R. Ramesh and J. L. Musfeldt and A. P. Litvinchuk and V. Gopalan},
  journal= {arXiv preprint arXiv:0803.3473},
  year   = {2015}
}

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11 pages including figures

Spin-Charge-Lattice Coupling through Resonant Multi-Magnon Excitations in Multiferroic BiFeO3

Abstract

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