Spin-orbit torque in a bulk perpendicular magnetic anisotropy Pd/FePd/MgO system View Full Text


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Article Info

DATE

2015-05

AUTHORS

Hwang-Rae Lee, Kyujoon Lee, Jaehun Cho, Young-Ha Choi, Chun-Yeol You, Myung-Hwa Jung, Frédéric Bonell, Yoichi Shiota, Shinji Miwa, Yoshishige Suzuki

ABSTRACT

Spin-orbit torques, including the Rashba and spin Hall effects, have been widely observed and investigated in various systems. Since interesting spin-orbit torque (SOT) arises at the interface between heavy nonmagnetic metals and ferromagnetic metals, most studies have focused on the ultra-thin ferromagnetic layer with interface perpendicular magnetic anisotropy. Here, we measured the effective longitudinal and transverse fields of bulk perpendicular magnetic anisotropy Pd/FePd (1.54 to 2.43 nm)/MgO systems using harmonic methods with careful correction procedures. We found that in our range of thicknesses, the effective longitudinal and transverse fields are five to ten times larger than those reported in interface perpendicular magnetic anisotropy systems. The observed magnitude and thickness dependence of the effective fields suggest that the SOT do not have a purely interfacial origin in our samples. More... »

PAGES

6548

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/srep06548

DOI

http://dx.doi.org/10.1038/srep06548

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1048798256

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/25293693


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