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Magnetic anisotropy, exchange coupling and Dzyaloshinskii–Moriya interaction of two-dimensional magnets |
Qirui Cui1, Liming Wang1, Yingmei Zhu1, Jinghua Liang1, Hongxin Yang1,2,3() |
1. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China 2. School of Physics, Nanjing University, Nanjing 210093, China 3. Center of Materials Science and Optoeledctronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract The two-dimensional (2D) magnets provide novel opportunities for understanding magnetism and investigating spin related phenomena in several atomic thickness. Multiple features of 2D magnets, such as critical temperatures, magnetoelectric/magneto-optic responses, and spin configurations, depend on the basic magnetic terms that describe various spins interactions and cooperatively determine the spin Hamiltonian of studied systems. In this review, we present a comprehensive survey of three types of basic terms, including magnetic anisotropy that is intimately related with long-range magnetic order, exchange coupling that normally dominates the spin interactions, and Dzyaloshinskii−Moriya interaction (DMI) that favors the noncollinear spin configurations, from the theoretical aspect. We introduce not only the physical features and origin of these crucial terms in 2D magnets but also many correlated phenomena, which may lead to the advance of 2D spintronics.
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Keywords
magnetic anisotropy
exchange coupling
Dzyaloshinskii–Moriya interaction
two-dimensional magnets
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Corresponding Author(s):
Hongxin Yang
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Issue Date: 30 November 2022
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