Current-induced ferromagnetism and spin torque due to large spin Hall effect

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Pure spin current can be generated from electric current through spin Hall effect in nonmagnetic materials, and therefore it is of particular interest in solid state physics. However, almost no functionality using spin Hall effect has been realized in the field of electronics. In this study, we have investigated control of magnetism and magnetization reversal using spin Hall effect. While our proposed device has been demonstrated by the other group in USA, some basic knowledge on possible functionalities of spin Hall effect has been obtained. In particular, it has been clarified that adding a second element is an effective way to enlarge spin Hall effect of materials.