Janus monolayers of magnetic transition metal dichalcogenides as an all-in-one platform for spin-orbit torque

Idris Smaili, Slimane Laref, Jose H. Garcia, Udo Schwingenschlögl, Stephan Roche, Aurelien Manchon

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We theoretically predict that vanadium-based Janus dichalcogenide monolayers constitute an ideal platform for spin-orbit torque memories. Using first-principles calculations, we demonstrate that magnetic exchange and magnetic anisotropy energies are higher for heavier chalcogen atoms, while the broken inversion symmetry in the Janus form leads to the emergence of Rashba-like spin-orbit coupling. The spin-orbit torque efficiency is evaluated using optimized quantum transport methodology and found to be comparable to heavy nonmagnetic metals. The coexistence of magnetism and spin-orbit coupling in such materials with tunable Fermi-level opens new possibilities for monitoring magnetization dynamics in the perspective of nonvolatile magnetic random access memories.
Original languageEnglish (US)
JournalPhysical Review B
Volume104
Issue number10
DOIs
StatePublished - Sep 15 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-09-17
Acknowledged KAUST grant number(s): OSR-2018-CRG7-3717
Acknowledgements: The authors were supported by King Abdullah University of Science and Technology (KAUST) through Award No. OSR-2018-CRG7-3717 from the Office of Sponsored Research (OSR). For computer time, this research used the resources of the Supercomputing Laboratory at KAUST. ICN2 authors were supported by the European Union Horizon 2020 research and innovation programme under Grant No. 881603
(Graphene Flagship), by the CERCA Programme/Generalitat de Catalunya, and by the Severo Ochoa program from Spanish
MINECO (Grants No. SEV-2017-0706 and No. MAT2016-75952-R).

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