Abstract
Magnetic properties of Mg-doped WS2 monolayer under strain are investigated by ab initio methods. Without strain, the Mg-doped WS2 monolayer is a magnetic nano material and the total magnetic moment is about 1.68 μ B. We applied strain to Mg-doped WS2 monolayer from −10 to 10%. The system changes from semiconductor to half-metallic material from 3 to 10% strain. The magnetic moment gets a maximum value of 2.07 μ B at −3% compressive strain. However, the magnetic moment of system decreases to zero sharply when compressive strain arrived at −5%. The coupling among the 3s states of Mg, 5d states of W, and 3p states of S is responsible for the strong strain effect on the magnetic properties. Our studies predict Mg-doped WS2 monolayer under strain to be candidates for application in spintronics.
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The work is supported by the Shanghai Committee of Science and Technology, China (Grant No. ZHT. K1507). We also thank the National Supercomputer Center in Shenzhen.
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Luo, M., Yin, H.H. & Chu, J.H. Strain-Dependent Electronic and Magnetic of Mg-Doped Monolayer of WS2 . J Supercond Nov Magn 31, 1637–1642 (2018). https://doi.org/10.1007/s10948-017-4380-2
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DOI: https://doi.org/10.1007/s10948-017-4380-2