论文标题
带有旋转轨道扭矩的四州磁性隧道连接连接
A four-state magnetic tunnel junction switchable with spin-orbit torques
论文作者
论文摘要
我们提出了一个磁性隧道连接点（MTJ），其两个铁磁层的形式是单个椭圆（SE）和两跨椭圆（TCE）的形式。 MTJ表现出与TCE结构的四个remanent状态相对应的四个不同的电阻状态。在基础TA层中流动的电流会在相邻的TCE结构自旋轨道扭矩中产生，该扭矩在其所有电阻状态之间诱导四态MTJ的无场切换。所展示的四态MTJ是制造具有多种电阻状态的多级MTJ的重要一步，在各种旋转的应用中可能很重要，例如多级磁性随机访问或神经形态记忆。
We present a magnetic tunnel junction (MTJ) where its two ferromagnetic layers are in the form of a single ellipse (SE) and two-crossing ellipses (TCE). The MTJ exhibits four distinct resistance states corresponding to the four remanent states of the TCE structure. Flowing current in an underlying Ta layer generates in the adjacent TCE structure spin-orbit torques which induce field-free switching of the four-state MTJ between all its resistance states. The demonstrated four-state MTJ is an important step towards fabricating multi-level MTJs with numerous resistance states which could be important in various spintronics applications, such as multi-level magnetic random access or neuromorphic memory.
