期刊
2D MATERIALS
卷 7, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1583/ab93e3
关键词
manganese phosphorus trisulphide; magnetic phase transition; raman scattering; heisenberg model; density functional theory; mnps3; antiferromagnetism
资金
- EU Graphene Flagship project
- ATOMOPTO project (TEAM programme of the Foundation for Polish Science)
- EU within the ERDFund
We report experimental and theoretical studies on the magnetoelastic interactions in MnPS3. Raman scattering response measured as a function of temperature shows a blue shift of the Raman active modes at 120.2 and 155.1 cm(-1), when the temperature is raised across the antiferromagnetic-paramagnetic transition. Density functional theory (DFT) calculations have been performed to estimate the effective exchange interactions and calculate the Raman active phonon modes. The calculations lead to the conclusion that the peculiar behavior with temperature of the two low energy phonon modes can be explained by the symmetry of their corresponding normal coordinates which involve the virtual modification of the super-exchange angles associated with the leading antiferromagnetic (AFM) interactions. We report experimental and theoretical studies on the magnetoelastic interactions in MnPS3. Raman scattering response measured as a function of temperature shows a blue shift of the Raman active modes at 120.2 and 155.1 cm(-1), when the temperature is raised across the antiferromagnetic-paramagnetic transition. Density functional theory (DFT) calculations have been performed to estimate the effective exchange interactions and calculate the Raman active phonon modes. The calculations lead to the conclusion that the peculiar behavior with temperature of the two low energy phonon modes can be explained by the symmetry of their corresponding normal coordinates which involve the virtual modification of the super-exchange angles associated with the leading antiferromagnetic (AFM) interactions.
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