Description: Hidden interplay of current-induced spin and orbital torques in bulk Fe 3 GeTe 2

This title appears in the Scientific Report : 2022

Hidden interplay of current-induced spin and orbital torques in bulk Fe 3 GeTe 2

Low crystal symmetry of magnetic van der Waals materials naturally promotes spin-orbital complexityunachievable in common magnetic materials used for spin-orbit torque switching. Here, using first-principlesmethods, we demonstrate that an interplay of spin and orbital degrees of freedom has a profou...

Personal Name(s):	Saunderson, Tom G. (Corresponding author)
	Go, Dongwook / Blügel, Stefan / Kläui, Mathias / Mokrousov, Yuriy
Contributing Institute:	Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1
Published in:	Physical review research, 4 (2022) 4, S. L042022
Imprint:	College Park, MD APS 2022
DOI:	10.1103/PhysRevResearch.4.L042022
Document Type:	Journal Article
Research Program:	Topological Matter
Link:	OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://hdl.handle.net/2128/32444 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevResearch.4.L042022 in citations.

Low crystal symmetry of magnetic van der Waals materials naturally promotes spin-orbital complexityunachievable in common magnetic materials used for spin-orbit torque switching. Here, using first-principlesmethods, we demonstrate that an interplay of spin and orbital degrees of freedom has a profound impact onspin-orbit torques in the prototypical van der Waals ferromagnet Fe 3 GeTe 2 . While we show that bulk Fe 3 GeTe 2hosts strong “hidden” current-induced torques harvested by each of its layers, we uncover that their originalternates between the conventional spin flux torque and the so-called orbital torque as the magnetizationdirection is varied. A drastic difference in the behavior of the two types of torques results in a nontrivial evolutionof switching properties with doping. Our findings promote the design of nonequilibrium orbital properties as theguiding mechanism for crafting the properties of spin-orbit torques in layered van der Waals materials.