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Anisotropy in the Lattice Dynamics in the Charge-Orbital Ordered Phase: a Raman Spectroscopic Study
- Authors
- Lee, Y. S.; He, J. P.; Kaneko, Y.; Arima, T.; Tokura, Y.
- Issue Date
- Jun-2009
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Raman spectroscopy; Eu(1/2)Ca(3/2)MnO(4); Anisotropy in lattice dynamics
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.54, no.6, pp.2353 - 2357
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 54
- Number
- 6
- Start Page
- 2353
- End Page
- 2357
- ISSN
- 0374-4884
- Abstract
- We investigated the polarization-dependent Raman-active phonon spectra in a single domain of half-doped Eu(1/2)Ca(3/2)MnO(4) with charge-orbital ordering. While the Raman spectra in both polarizations commonly exhibit the robust development of two phonon modes, Jahn-Teller and breathing modes, below the charge-orbital ordering temperature, the intensities of the modes are found to be polarization dependent. These behaviors are discussed in relation to the CE-type ordering and the resultant electronic anisotropy.
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Related Researcher
- Lee, Yun Sang
- College of Natural Sciences (Department of Physics)