[7p-P03-1~47] 10 Spintronics and Magnetics (Poster)

[7p-P03-28] Spin Hall effect in O-doped Pt layers prepared by sputtering

〇Yusei Ono¹, Mitsuki Yoshino², Taichi Hombo¹, John Rex Mohan¹, Yoichi Horibe¹, Manabu Ishimaru¹, Hironori Asada², Yasuhiro Fukuma¹ (1.Kyushu Inst. Tech., 2.Yamaguchi Univ.)

Keywords:

spin Hall effect,spin-orbit torque

A Pt thin film with added oxygen was fabricated to investigate how the spin Hall effect changes due to an oxygen concentration gradient. In the uniform single-layer film, the y-component of the spin Hall effect is dominant. However, in the PtOx (Gradient) structure composed of five layers of PtOx with varying oxygen concentrations (0, 5, 10, 15, and 20%; 2 nm × 5 layers = 10 nm), contributions from spin currents with spin polarization components in directions different from the y-axis were observed.