Raman Spectroscopic Probe of the Magnetic Specific Heat in Quantum MagnetsRaman Spectroscopic Probe of the Magnetic Specific Heat in Quantum Magnets
- Authors
- Yoon Sungwon; Choi Kwang-Yong; Nam Hyoungjoo
- Issue Date
- Jul-2020
- Publisher
- 한국물리학회
- Keywords
- Quantum magnet; Magnetic specific heat; Magnetic Raman scattering
- Citation
- Journal of the Korean Physical Society, v.77, no.2, pp 138 - 144
- Pages
- 7
- Journal Title
- Journal of the Korean Physical Society
- Volume
- 77
- Number
- 2
- Start Page
- 138
- End Page
- 144
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/42962
- DOI
- 10.3938/jkps.77.138
- ISSN
- 0374-4884
1976-8524
- Abstract
- Quasielastic Raman scattering arising from spin energy fluctuations is used to extract the magnetic specific heat. To test the applicability of a Raman scattering technique for probing magnetic specific heat, we choose three different classes of quantum magnets: (i) a quasi-1D s=1/2 antiferromagnetic chain CuSe2O5, (ii) a 3D Kitaev honeycomb magnet γ-Li2IrO3, and (iii) a coupled-spin tetrahedral system Cu2Te2O5Cl2. Despite distinct dimensionality, spin topology, and spin-exchange type, the three materials show a pronounced quasielastic response commonly, enabling the determination of the magnetic contributions to the specific heat. Our work demonstrates that a Raman spectroscopic method is useful, complementing the conventional thermodynamic method, in deriving the magnetic specific heat in quantum magnets.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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