Study of spin orbit torque switching in ferrimagnetic Gd_{x}(Fe_{90}Co_{10})_{100-x} alloy

Niklas Roschewsky; Tomoya Matsumura; Takeshi Kato; Satoshi Iwata; Suraj Cheema; James Clarkson; Sayeef Salahuddin

Study of spin orbit torque switching in ferrimagnetic Gd$_{x}($Fe$_{90}$Co$_{10})_{100-x}$ alloy

ORAL

Abstract

Magnetization switching in ferromagnetic metals (FM) with spin-orbit torques (SOT) is a well established technique. The SOT originates from spin accumulation at the interface of the FM generated by the spin Hall effect in an adjacent heavy metal. Here we report measurements of SOT in the alloy Gd$_{x}($Fe$_{90}$Co$_{10})_{100-x}$, where the transition metal sub-lattice and the rare earth sub-lattice couple antiferromagnetically. By varying the composition $x$ of the alloy we can tune the total magnetization. Anormalous Hall effect measurements are conducted to study the effect of SOT on the Gd$_{x}($Fe$_{90}$Co$_{10})_{100-x}$ magnetization.

^*This work was supported by Department of Energy Basic Energy Sciences Award no DE -SC0012371

March 14, 2016, 9:48 AM – March 14, 2016, 10:00 AM

Authors

Niklas Roschewsky
- Department of Physics, University of California, Berkeley
Tomoya Matsumura
- Department of Electrical Engineering and Computer Science, Nagoya University Furo-cho, Chikusa-ku
Takeshi Kato
- Department of Electrical Engineering and Computer Science, Nagoya University Furo-cho, Chikusa-ku
Satoshi Iwata
- Advanced Measurement Technology Center, Nagoya University Furo-cho, Chikusa-ku
Suraj Cheema
- Department of Materials Science and Engineering, University of California, Berkeley
James Clarkson
- Department of Materials Science and Engineering, University of California, Berkeley
Sayeef Salahuddin
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley