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

纯自旋电流可以在非磁性材料中通过自旋霍尔效应产生，因此在固体物理中具有特殊的研究意义。然而，利用自旋霍尔效应在电子学领域几乎没有实现任何功能。在本研究中，我们研究了利用自旋霍尔效应控制磁性和磁化反转。虽然我们提出的器件已经由美国的另一个小组演示，但已经获得了一些关于自旋霍尔效应可能功能的基本知识。特别指出了加入第二元素是扩大材料自旋霍尔效应的有效途径。

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.