论文标题
电流诱导的全线性多层磁开关
All-Linear Multistate Magnetic Switching Induced by Electrical Current
论文作者
论文摘要
我们提出了一种控制域壁运动的替代机制，当调节d/a（dzyaloshinskii-moriya相互作用与交换相互作用）的比率时，其方向是由电流的振幅操纵的。为了确认这种机制，我们观察到这种类型的域壁运动，并通过调整带有离子植入的TA/PT/CO/TA多层设备的D/A来证明无滞后效应的线性磁切换。我们进一步找到了离子暴露和未暴露区域的横向界面处的无磁性偏置和性可控的多态开关，这是由于当前诱导的Neel壁运动以及该界面处的强交换耦合所致。
We present an alternative mechanism to control the domain wall motion, whose directions are manipulated by the amplitude of electrical currents when modulating the ratio of D/A (constants of Dzyaloshinskii-Moriya interaction over exchange interaction). To confirm this mechanism, we observe this type of domain wall motion and demonstrate linear magnetic switching without hysteresis effect via adjusting the D/A of Ta/Pt/Co/Ta multilayer device with ion implantations. We further find field-free biased and chirally controllable multistate switching at the lateral interface of ion exposed and unexposed area, which is due to the current induced Neel wall motion and a strong exchange coupling at this interface.
