[17a-Z19-1~12] 10.2 Fundamental and exploratory device technologies for spin

▲ [17a-Z19-12] Large spin Hall effect in amorphous Co-Ni-B alloys

〇Yuki Hibino¹, Tomohiro Taniguchi¹, Kay Yakushiji¹, Akio Fukushima¹, Hitoshi Kubota¹, Shinji Yuasa¹ (1.AIST)

Keywords:spin Hall effect, spin current, spin-orbit torque

Spin Hall effect is a one of the major sources to generate a pure spin current from electrical means and allows efficient control of magnetization. So far, the spin Hall effect has been investigated using materials with strong spin-orbit coupling, and light elements, such as 3d transition metals, are often considered to be negligible because of its weak spin-orbit coupling. Contrary to this, we report an efficient spin Hall material can be realized in 3d transition metals. In this presentation, we report large spin-Hall effect in the amorphous Co-Ni-B alloys under paramagnetic state.