Perspective: Interface generation of spin-orbit torques

Joseph Sklenar, Wei Zhang, Matthias B. Jungfleisch, Wanjun Jiang, Hilal Saglam, John E. Pearson, John B. Ketterson, Axel Hoffmann*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Most of the modern spintronics developments rely on the manipulation of magnetization states via electric currents, which started with the discovery of spin transfer torque effects 20 years ago. By now, it has been realized that spin-orbit coupling provides a particularly efficient pathway for generating spin torques from charge currents. At the same time, spin-orbit effects can be enhanced at interfaces, which opens up novel device concepts. Here, we discuss two examples of such interfacial spin-orbit torques, namely, systems with inherently two-dimensional materials and metallic bilayers with strong Rashba spin-orbit coupling at their interfaces. We show how ferromagnetic resonance excited by spin-orbit torques can provide information about the underlying mechanisms. In addition, this article provides a brief overview of recent developments with respect to interfacial spin-orbit torques and an outlook of still open questions.

Original languageEnglish (US)
Article number180901
JournalJournal of Applied Physics
Volume120
Issue number18
DOIs
StatePublished - Nov 14 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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