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Phys. Rev. B 73, 161101(R) (2006) [4 pages]

Raman scattering of orbital waves in YTiO3

S. Sugai,1,2 A. Kikuchi,1 and Y. Mori1
1Department of Physics, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
2Venture Business Laboratory, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
Rapid Received 1 February 2006; published 6 April 2006

The Raman scattering mechanism of orbital waves is investigated by resonant Raman scattering and hot luminescence in YTiO3. The observation of hot luminescence from the charge-transferred TiO6 indicates that two-orbital wave scattering has a larger probability than one-orbital wave scattering. The energies of the broad two-orbital wave peaks are 530–800, 1770–1920, and 2430  cm–1. The energies are in good agreement with the theoretical predication.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.73.161101
DOI: 10.1103/PhysRevB.73.161101
PACS: 78.30.Hv; 63.20.Kr; 71.45.Gm; 75.30.-m
  • 78.30.Hv
    Infrared and Raman spectra in nonmetallic inorganics excluding elemental, II-VI and III-V semiconductors and fullerenes
  • 63.20.Kr
    Phonon–electron and phonon–phonon interactions
  • 71.45.Gm
    Exchange, correlation, dielectric and magnetic response functions, plasmons
  • 75.30.-m
    Intrinsic properties of magnetically ordered materials
  • YEAR: 2006
KEYWORDS: yttrium compounds, Raman spectra, luminescence, charge exchange

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