Theory of Raman scattering from orbital excitations in manganese oxides

S. Okamoto, S. Ishihara, and S. Maekawa
Phys. Rev. B 66, 014435 – Published 19 July 2002
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Abstract

We present a theory of the Raman scattering from the orbital wave excitations in manganese oxides. Two excitation processes of the Raman scattering are proposed. The Raman scattering cross sections are formulated by using the pseudospin operator for orbital degree of freedom in a Mn ion. The Raman spectra from the orbital wave excitations are calculated and their implications in the recent experimental results reported in LaMnO3 are discussed.

  • Received 1 August 2001

DOI:https://doi.org/10.1103/PhysRevB.66.014435

©2002 American Physical Society

Authors & Affiliations

S. Okamoto1, S. Ishihara2,*, and S. Maekawa3

  • 1The Institute of Physical and Chemical Research (RIKEN), Saitama 351-0198, Japan
  • 2Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan
  • 3Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

  • *Present address: Department of Physics, Tohoku University, Sendai 980-8578, Japan.

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Vol. 66, Iss. 1 — 1 July 2002

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