Magnetic interactions and orbital physics in RVO$_{3}$ perovskites

ORAL

Abstract

We have performed inelastic neutron scattering study on high quality YVO3 and LaVO3 powders. The magnetic interactions determined from the scattering spectra for YVO3 agree with a previous single crystal study. [1] For LaVO3, a --Jab $>$ Jc is in sharp contrast to the Jc $>$ -Jab in the C-type magnetically (C-AF) ordered state of YVO3. The mechanism that greatly suppresses Jab in C-AF state of YVO3 will be discussed together with thermal conductivity [2] and Raman spectroscopy [3] results. \newline [1] C. Ulrich, et al., Phys. Rev. Lett. \textbf{91}, 257202 (2003). \newline [2] J.-Q. Yan, et al., Phys. Rev. Lett. \textbf{93}, 235901 (2004). \newline [3] S. Miyasaka, et al., Phys. Rev. B \textbf{73}, 224436 (2006).

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Authors

  • J.-Q. Yan

    • Ames Laboratory, Ames, IA 50011

  • S. Chang

  • C. Brown

    • NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899

  • M. Hehlen

  • F. Trouw

    • LANSCE, Los Alamos National Laboratory, Los Alamos, NM 87545

  • R. McQueeney

    • Iowa State University/Ames Laboratory
    • Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011
    • Ames National Laboratory