Spin Hall effects in metallic antiferromagnets - Perspectives for future spin-orbitronics

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

14 Scopus citations

Abstract

We investigate angular dependent spin-orbit torques from the spin Hall effect in a metallic antiferromagnet using the spin-torque ferromagnetic resonance technique. The large spin Hall effect exists in PtMn, a prototypical CuAu-I-type metallic anti-ferromagnet. By applying epitaxial growth, we previously reported an appreciable difference in spin-orbit torques for c- and a-axis orientated samples, implying anisotropic effects in magnetically ordered materials. In this work we demonstrate through bipolar-magnetic-field experiments a small but noticeable asymmetric behavior in the spin-transfer-torque that appears as a hysteresis effect. We also suggest that metallic antiferromagnets may be good candidates for the investigation of various unidirectional effects related to novel spin-orbitronics phenomena.

Original languageEnglish (US)
Article number055603
JournalAIP Advances
Volume6
Issue number5
DOIs
StatePublished - May 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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