Abstract
The collective excitation in the orbital degree of freedom termed orbital wave is studied in the orbital ordered transition-metal oxides, in particular, in LaMnO3. Symmetry, dispersion and energy gap of this excitation are examined by the group theoretical analyses and the linear spin-wave theory. The cross-section of the Raman scattering from the orbital wave is calculated and is compared with the recent experimental results.
Original language | English |
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Pages (from-to) | 1343-1346 |
Number of pages | 4 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 63 |
Issue number | 6-8 |
DOIs | |
State | Published - 2002 |
Externally published | Yes |
Funding
The authors would like to thank Y. Tokura, T. Kimura, E. Saitoh, K. Takahashi, K. Tobe, K. Yamamoto and K. Tsuda for their valuable discussions. This work was supported by Grant-in-Aid for Scientific Research Priority Area from the Ministry of Education, Science, Sports, Culture and Technology of Japan, CREST Japan and Science and Technology Special Coordination Fund for Promoting Science and Technology. One of authors (S.M.) acknowledges support of the Hunboldt Foundation.
Keywords
- A. Magnetic material
- C. Raman spectroscopy
- D. Magnetic properties
- D. Optical properties