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Large Dzyaloshinskii-Moriya interaction and atomic layer thickness dependence in a ferromagnet-WS.sub.2./sub. heterostructure
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SYSNO ASEP 0567863 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Large Dzyaloshinskii-Moriya interaction and atomic layer thickness dependence in a ferromagnet-WS2 heterostructure Author(s) Husain, S. (SE)
Pal, S. (IN)
Chen, X. (SE)
Kumar, Prabhat (FZU-D) ORCID
Kumar, A. (SE)
Mondal, A.K. (IN)
Behera, N. (SE)
Gupta, N.K. (IN)
Hait, S. (IN)
Gupta, R. (SE)
Brucas, R. (SE)
Sanyal, B. (SE)
Barman, A. (IN)
Chaudhary, S. (IN)
Svedlindh, P. (SE)Number of authors 15 Article number 064422 Source Title Physical Review B. - : American Physical Society - ISSN 2469-9950
Roč. 105, č. 6 (2022)Number of pages 11 s. Language eng - English Country US - United States Keywords large Dzyaloshinskii-Moriya ; ferromagnet ; WS2 ; heterostructure Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000761166700004 EID SCOPUS 85125187885 DOI 10.1103/PhysRevB.105.064422 Annotation Two-dimensional transition metal dichalcogenides (TMDs) have immense potential for spintronics applications. Here, we report atomic layer thickness dependence in WS2/Co3FeB heterostructures. The layer dependence is predicted by density functional theory and demonstrated experimentally by the layer dependence of the Dzyaloshinskii-Moriya interaction (DMI). Notably, we have observed the DMI in WS2 to be larger than that for heavy metals such as W and Ta, which is important to stabilize chiral structures. Inversion symmetry is not preserved with an odd number of layers, while it exists with an even number of layers. This symmetry rule is reflected in the temperature dependence of the effective damping parameter of the heterostructure. This suggests that the layer dependence has its origin at the WS2 interface, where the spin-valley coupling and spin-orbit coupling activate these features.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2023 Electronic address https://doi.org/10.1103/PhysRevB.105.064422
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