Optical Properties of the Multiferroic Crystal Cu2OSeO3

ORAL

Abstract

Reflectivity as a function of temperature has been measured on the multiferroic crystal Cu2OSeO3 utilizing light spanning the far infrared to the visible portions of the electromagnetic spectrum. The complex dielectric function was obtained via Kramers-Kronig analysis. The optical properties as well as the dynamics of particular phonon modes have been monitored through the magnetic phase transition temperature (Tc=60K). Tentative assignments have also been made to the strong far infrared phonon modes.

*Supported by the US DOE through contract DE-FG02-02ER45984.

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Authors

  • Kevin Miller

    • University of Florida Physics Department

  • David Tanner

    • University of Florida Physics Department
    • Physics Department, University of Florida
    • University of Florida
    • Department of Physics, University of Florida
    • Department of Physics, Univ. of Florida
    • Department of physics, University of Florida

  • Daniel Arenas

    • University of Florida Physics Department

  • Helmuth Berger

    • Facult\`e des Sciences de Base