Journal
CHINESE PHYSICS B
Volume 28, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/28/5/056301
Keywords
Raman scattering; two-dimensional magnetic van der Waals materials; lattice dynamics; magnetism
Categories
Funding
- Ministry of Science and Technology of China [2016YFA0300504, 2017YFA0302904]
- National Natural Science Foundation of China [11474357, 11774419]
- Fundamental Research Funds for the Central Universities, China
- Research Funds of Renmin University of China [14XNLQ03]
Ask authors/readers for more resources
We report a comprehensive Raman scattering study on layered MPS3 (M = Mn, Fe, Ni), a two-dimensional magnetic compound with weak van der Waals interlayer coupling. The observed Raman phonon modes have been well assigned by the combination of first-principles calculations and the polarization-resolved spectra. Careful symmetry analysis on the angle-dependent spectra demonstrates that the crystal symmetry is strictly described by C-2h but can be simplified to D-3d with good accuracy. Interestingly, the three compounds share exactly the same lattice structure but show distinct magnetic structures. This provides us with a unique opportunity to study the effect of different magnetic orders on lattice dynamics in MPS3. Our results reveal that the in-plane Neel antiferromagnetic (AF) order in MnPS3 favors a spin-phonon coupling compared to the in-plane zig-zag AF in NiPS3 and FePS3. We have discussed the mechanism in terms of the folding of magnetic Brillouin zones. Our results provide insights into the relation between lattice dynamics and magnetism in the layered MPX3 (M = transition metal, X = S, Se) family and shed light on the magnetism of monolayer MPX(3 )materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available