中国物理B ›› 2019, Vol. 28 ›› Issue (5): 56301-056301.doi: 10.1088/1674-1056/28/5/056301

所属专题： Virtual Special Topic — Magnetism and Magnetic Materials

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Raman scattering study of magnetic layered MPS3 crystals (M=Mn, Fe, Ni)

Yi-Meng Wang(王艺朦), Jian-Feng Zhang(张建丰), Cheng-He Li(李承贺), Xiao-Li Ma(马肖莉), Jian-Ting Ji(籍建葶), Feng Jin(金峰), He-Chang Lei(雷和畅), Kai Liu(刘凯), Wei-Lu Zhang(张玮璐), Qing-Ming Zhang(张清明)   

  1. 1 Department of Physics, Renmin University of China, Beijing 100872, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 Department of Engineering and Applied Sciences, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan;
    4 School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2019-02-12 修回日期:2019-03-16 出版日期:2019-05-05 发布日期:2019-05-05
  • 通讯作者: Qing-Ming Zhang E-mail:qmzhang@ruc.edu.cn
  • 基金资助:

    Project supported by the Ministry of Science and Technology of China (Grant Nos. 2016YFA0300504 and 2017YFA0302904), the National Natural Science Foundation of China (Grant Nos. 11474357 and 11774419), the Fundamental Research Funds for the Central Universities, China, and the Research Funds of Renmin University of China (Grant No. 14XNLQ03).

Raman scattering study of magnetic layered MPS3 crystals (M=Mn, Fe, Ni)

Yi-Meng Wang(王艺朦)1, Jian-Feng Zhang(张建丰)1, Cheng-He Li(李承贺)1, Xiao-Li Ma(马肖莉)2, Jian-Ting Ji(籍建葶)2, Feng Jin(金峰)1, He-Chang Lei(雷和畅)1, Kai Liu(刘凯)1, Wei-Lu Zhang(张玮璐)3, Qing-Ming Zhang(张清明)2,4   

  1. 1 Department of Physics, Renmin University of China, Beijing 100872, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 Department of Engineering and Applied Sciences, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan;
    4 School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Received:2019-02-12 Revised:2019-03-16 Online:2019-05-05 Published:2019-05-05
  • Contact: Qing-Ming Zhang E-mail:qmzhang@ruc.edu.cn
  • Supported by:

    Project supported by the Ministry of Science and Technology of China (Grant Nos. 2016YFA0300504 and 2017YFA0302904), the National Natural Science Foundation of China (Grant Nos. 11474357 and 11774419), the Fundamental Research Funds for the Central Universities, China, and the Research Funds of Renmin University of China (Grant No. 14XNLQ03).

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摘要：

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 C2h but can be simplified to D3d 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 Néel 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 MPX3 materials.

关键词: Raman scattering, two-dimensional magnetic van der Waals materials, lattice dynamics, magnetism

Abstract:

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 C2h but can be simplified to D3d 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 Néel 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 MPX3 materials.

Key words: Raman scattering, two-dimensional magnetic van der Waals materials, lattice dynamics, magnetism

中图分类号:  (Phonons in crystal lattices)

  • 63.20.-e
63.22.-m (Phonons or vibrational states in low-dimensional structures and nanoscale materials) 75.75.-c (Magnetic properties of nanostructures) 78.30.-j (Infrared and Raman spectra)