Journal article

Adjusted oscillator strength matching for hybrid magnetic and electric excitations in Dy₃Fe₅O₁₂ garnet

  • Rogers, P. D. Department of Physics, New Jersey Institute of Technology, Newark, USA
  • Choi, Y. J. Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey, USA
  • Standard, E. C. Department of Physics, New Jersey Institute of Technology, Newark, USA
  • Kang, T. D. Department of Physics, New Jersey Institute of Technology, Newark, USA
  • Ahn, K. H. Department of Physics, New Jersey Institute of Technology, Newark, USA
  • Dubroka, Adam Department of Physics, University of Fribourg, Switzerland
  • Marsik, Premysl Department of Physics, University of Fribourg, Switzerland
  • Wang, Ch. Department of Physics, University of Fribourg, Switzerland
  • Bernhard, Christian Department of Physics, University of Fribourg, Switzerland
  • Park, S. Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey, USA - Department of Physics, Chung-Ang University, Seoul, South Korea
  • Cheong, S.-W. Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey, USA
  • Kotelyanskii, M. Department of Physics, New Jersey Institute of Technology, Newark, USA - Rudolph Technologies Inc., Flanders, New Jersey, USA
  • Sirenko, Andrei A. Department of Physics, New Jersey Institute of Technology, Newark, USA
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    03.05.2011
Published in:
  • Physical Review B - Condensed Matter and Materials Physics. - 2011, vol. 83, no. 17, p. 174407
English Far-infrared spectra of magnetodielectric Dy₃Fe₅O₁₂ garnet were studied using a combination of transmittance, reflectivity, and rotating analyzer ellipsometry. In addition to purely dielectric and magnetic modes, we observed several hybrid modes with a mixed magnetic and electric dipole activity. Using 4×4 matrix formalism for materials with μ(ω)≠1, we modeled the experimental optical spectra and determined the far-infrared dielectric and magnetic permeability functions. The matching condition μ(ωh)Se=ɛ(ωh)Sm for the oscillator strengths S₍₎ explains the observed vanishing of certain hybrid modes at ωh in reflectivity.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/301956
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