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Synchrotron X-ray Study of Lattice Vibrations in CdCr2O4
- Kim, Jung-Hwa;
- Matsuda, Masa;
- Ueda, Hiroaki;
- Ueda, Yutaka;
- Chung, Jae-Ho;
- 외 3명
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5초록
Using inelastic x-ray scattering we have investigated lattice vibrations in a geometric frustrated system CdCr2O4 that upon cooling undergoes a spin-Peierls phase transition at T-N = 7.8K from a cubic and paramagnetic to a tetragonal and Neel state. Phonon modes measured around Brillouin zone boundaries show energy shifts when the transition occurs. Our analysis shows that the shifting can be understood as the ordinary effects of the lowering of the crystal symmetry.
키워드
frustrated system CdCr2O4; Synchrotron inelastic x-ray scattering; phonon dispersions; a spin-Peierls phase transition; spin-lattice coupling; OXIDES
- 제목
- Synchrotron X-ray Study of Lattice Vibrations in CdCr2O4
- 저자
- Kim, Jung-Hwa; Matsuda, Masa; Ueda, Hiroaki; Ueda, Yutaka; Chung, Jae-Ho; Tsutsui, Satoshi; Baron, Alfred Q. R.; Lee, Seung-Hun
- 발행일
- 2011-07
- 유형
- Article
- 권
- 80
- 호
- 7