Hidden interplay of current-induced spin and orbital torques in bulk Fe3GeTe2
Saunderson TG, Go D, Bluegel S, Klaeui M, Mokrousov Y (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 4
Article Number: L042022
Journal Issue: 4
DOI: 10.1103/PhysRevResearch.4.L042022
Abstract
Low crystal symmetry of magnetic van der Waals materials naturally promotes spin-orbital complexity unachievable in common magnetic materials used for spin-orbit torque switching. Here, using first-principles methods, we demonstrate that an interplay of spin and orbital degrees of freedom has a profound impact on spin-orbit torques in the prototypical van der Waals ferromagnet Fe3GeTe2. While we show that bulk Fe3GeTe2 hosts strong "hidden"current-induced torques harvested by each of its layers, we uncover that their origin alternates between the conventional spin flux torque and the so-called orbital torque as the magnetization direction is varied. A drastic difference in the behavior of the two types of torques results in a nontrivial evolution of switching properties with doping. Our findings promote the design of nonequilibrium orbital properties as the guiding mechanism for crafting the properties of spin-orbit torques in layered van der Waals materials.
Involved external institutions
Germany (DE)How to cite
APA:
Saunderson, T.G., Go, D., Bluegel, S., Klaeui, M., & Mokrousov, Y. (2022). Hidden interplay of current-induced spin and orbital torques in bulk Fe3GeTe2. Physical Review Research, 4(4). https://doi.org/10.1103/PhysRevResearch.4.L042022
MLA:
Saunderson, Tom G., et al. "Hidden interplay of current-induced spin and orbital torques in bulk Fe3GeTe2." Physical Review Research 4.4 (2022).
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