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PCMW2D and 2D Raman correlation spectroscopy evidence for presence of spin-phonon coupling in hexagonal LuMnO3
- Title
- PCMW2D and 2D Raman correlation spectroscopy evidence for presence of spin-phonon coupling in hexagonal LuMnO3
- Authors
- Nguyen, Thi Minh Hien; Nguyen, Xuan Nghia; Nguyen, Thi Huyen; Vu, Thi Kim Oanh; Le, Duc Huy; Nguyen, Van Minh; Yang, In-Sang; Cheong, Sang-Wook
- Ewha Authors
- 양인상
- SCOPUS Author ID
- 양인상
- Issue Date
- 2023
- Journal Title
- SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
- ISSN
- 1386-1425
1873-3557
- Citation
- SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY vol. 297
- Keywords
- Hexagonal LuMnO3; Raman scattering; Two-dimension correlation spectroscopy; Perturbation-correlation moving window two- dimensional correlation spectroscopy; Spin phonon coupling
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Two-dimensional correlation spectroscopy (2D-COS) and perturbation-correlation moving window twodimensional correlation spectroscopy (PCMW2D) analysis are performed on the temperature-dependent Raman spectra of hexagonal LuMnO3 single crystal. Under the resonance with the on-site Mn d-d transitions, the correlation between the phonons which are relate to the vibration of Mn ions' bonds and spin-excitation peaks suggest a strong spin-phonon coupling in LuMnO3. The PCMW2D results clearly show that the significant change in phonons and spin-excitation peaks occurs around the Ne & PRIME;el temperature and the spin reorientation transition. The multiple components in the broad spin-excitation peaks also suggest variations in spin symmetries in the ground state. Furthermore, we propose that the 2D-COS and PCMW2D Raman correlation spectroscopies provide a simple and powerful method for investigating the couplings and the transitions, which would be very important for understanding systematically the magnetoelectric properties of multiferroic materials.
- DOI
- 10.1016/j.saa.2023.122753
- Appears in Collections:
- 자연과학대학 > 물리학전공 > Journal papers
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