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Erschienen in: Journal of Materials Science 7/2018

18.12.2017 | Computation

Strain effects on the magnetism of transition metal-doped MoTe2 monolayer

verfasst von: Jing Liu, Yaqiang Ma, Mingyu Zhao, Yi Li, Xianqi Dai, Yanan Tang

Erschienen in: Journal of Materials Science | Ausgabe 7/2018

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Abstract

Using first-principles calculations, we investigated the electronic and magnetic performance of MoTe2 monolayer doped by transition metal (TM) Ti, V, Cr, Mn, Fe, Co and Ni atoms as well as strain effects. The dopants of Ti, V, Mn, Fe, Co and Ni atoms can induce magnetic moments in MoTe2 monolayer, and the magnetic moments mainly originate from the localizing unpaired TM-3d electrons. Mn- and Fe-doped MoTe2 nanostructures show the half-metallic character with 100% spin polarization near the Fermi level. The elastic strain applied on TM-doped MoTe2 monolayer systems leads to the redistribution of the electrons in TM-3d states, which results in the magnetic state transition in doped systems. The magnetic moments of Ti-, Co- and Ni-substituted MoTe2 sheets monotonously increase with the increase in strain, while the magnetic moment of V-substituted MoTe2 sheet has an oscillatory variation with the increase in strain. The Hubbard potential U has no significant effect on our main conclusions. The research results offer an important theoretical support for further application of strain-driven spin devices on MoTe2 nanostructures.

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Metadaten
Titel
Strain effects on the magnetism of transition metal-doped MoTe2 monolayer
verfasst von
Jing Liu
Yaqiang Ma
Mingyu Zhao
Yi Li
Xianqi Dai
Yanan Tang
Publikationsdatum
18.12.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 7/2018
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-1917-5

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