Dresden 2014 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 31: Focus Session: Spin-Orbit Torque at Surfaces and Interfaces

MA 31.2: Topical Talk

Mittwoch, 2. April 2014, 15:30–16:00, BEY 118

Recent Theoretical Progress in Spin-orbit Torques — •Aurelien Manchon — Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia

Utilizing spin-orbit coupling to enable the electrical manipulation of ferromagnets and magnetic textures has attracted a considerable amount of interest in the past few years. In a first part, I will introduce the most striking experimental achievements to date in bulk or interfacial inversion asymmetric systems. In a second part, I will present the most recent theoretical progress in the field, spanning from the role of intrinsic contributions to the spin-orbit torque to the impact of the newly predicted spin swapping effect. In a third part, I will introduce a new paradigm, coined spin-orbit caloritronics. Indeed, we recently demonstrated that even in the absence of magnetic texture, a magnon flow generates torques if magnons are subject to Dzyaloshinskii-Moriya interaction (DMI) just as an electron flow generates torques when submitted to Rashba interaction. We show that merging the spin-orbit torques with spin caloritronics is rendered possible by the emergence of DMI in magnetic materials and opens promising avenues in the development of chargeless information technology.