Innovative multiple-bit information writing using local pure spin current injection

我们提出了一种在纳米级磁点中写入多比特信息的创新方法，并开发了其基本技术。首先，我们证明了多涡旋状态可以稳定在纳米级的磁性三角形中。其次，我们开发了一种利用多端自旋注入产生巨大纯自旋电流的方法。最后，我们演示了通过纯自旋电流注入实现磁点的部分磁化开关。将这些技术结合起来，将开发出一种新颖的多比特信息写入技术。

We have proposed an innovative way for writing multi-bit informations in a nano-sized magnetic dot and developed its elemental techniques. First, we have demonstrated that a multi vortex states can be stabilized in a nano-sized magnetic triangle. Secondly, we have developed a method for generating giant pure spin current by using multi-terminal spin injection. Finally, we have demonstrated a partial magnetization switching of the magnetic dot by pure spin current injection. By combining these techniques, a novel multi-bit information writing will be developed.