论文标题
赛车设备中手性旋转纹理的旋转边缘驱动的处理
Rotating edge-field driven processing of chiral spin textures in racetrack devices
论文作者
论文摘要
拓扑上不同的磁性结构，例如天空，域壁和均匀磁性状态，在逻辑设备，传感器和信息位中具有多个应用。应用这些位的最有前途的概念之一是由电流或磁性驱动场控制的赛道结构。在最新的赛道中，这些磁场或电流应用于整个电路。在这里，我们采用微磁性和原子模拟来建立无全球驱动力的赛马场记忆的概念。令人惊讶的是，我们意识到，拓扑不同对象的混合序列可以在远距离上仅通过样品边界的磁化局部旋转而创建和传播。我们揭示了旋转的手性与传播方向之间的依赖性，并定义了可以实现所提出过程的相空间。这种方法的优点是排除高电流和田间密度及其与节能三维设计的兼容性。
Topologically distinct magnetic structures like skyrmions, domain walls, and the uniformly magnetized state have multiple applications in logic devices, sensors, and as bits of information. One of the most promising concepts for applying these bits is the racetrack architecture controlled by electric currents or magnetic driving fields. In state-of-the-art racetracks, these fields or currents are applied to the whole circuit. Here, we employ micromagnetic and atomistic simulations to establish a concept for racetrack memories free of global driving forces. Surprisingly, we realize that mixed sequences of topologically distinct objects can be created and propagated over far distances exclusively by local rotation of magnetization at the sample boundaries. We reveal the dependence between the chirality of the rotation and the direction of propagation and define the phase space where the proposed procedure can be realized. The advantages of this approach are the exclusion of high current and field densities as well as its compatibility with an energy-efficient three-dimensional design.
