Spin torque nano-oscillators with a perpendicular spin polarizer<xref rid="cpb_28_3_037503fn1" ref-type="fn">*</xref><fn id="cpb_28_3_037503fn1"><label>*</label><p>Project supported by the National Basic Research Program of China (Grant No. 2015CB921501) and the National Natural Science Foundation of China (Grant Nos. 11774260, 51671057, and 11874120).</p></fn>

Spin torque nano-oscillators with a perpendicular spin polarizer**

Project supported by the National Basic Research Program of China (Grant No. 2015CB921501) and the National Natural Science Foundation of China (Grant Nos. 11774260, 51671057, and 11874120).

Zheng Cuixiu¹, Chen Hao-Hsau², Zhang Xiangli², Zhang Zongzhi², Liu Yaowen^{1, †}

(a) A schematic configuration of a STNO with IP and OP dual polarizers. (b) Comparison of magnetization switching driven by spin-torques excited by dual polarizers (red-curve) and by a single IP polarizer (blue-curve). (c) Phase diagram of the free layer magnetization dynamics dependence on the spin-torques strengths generated from the IP and OP polarizers. (d) Oscillation frequency dependence on the spin-torque strengths at a fixed OP spin-torque (a) and a fixed IP spin-torque.