One of the major strategies to control magnetism in spintronics is to utilize the coupling between electron spin and its orbital motion. The Rashba and Dresselhaus spin–orbit couplings induce magnetic textures of band electrons called spin momentum locking, which produces a spin torque by the injection of electric current. However, joule heating had been a bottleneck for device applications. Here, we propose a theory to generate further rich spin textures in insulating antiferromagnets with broken spatial inversion symmetry (SIS), which is easily controlled by a small magnetic field. In antiferromagnets, the ordered moments host two species of magnons that serve as internal degrees of freedom in analogy with electron spins. The Dzyaloshinskii–Moriya interaction introduced by the SIS breaking couples the two-magnon-degrees of freedom with the magnon momentum. We present a systematic way to design such texture and to detect it via magnonic spin current for the realization of antiferromagnetic memory.

控制自旋电子学中磁性的主要策略之一是利用电子自旋与其轨道运动之间的耦合。Rashba和Dresselhaus自旋轨道耦合感应出带电子的磁织构，称为自旋动量锁定，通过注入电流产生自旋转矩。但是，焦耳加热一直是设备应用的瓶颈。在这里，我们提出了一种在空间反对称性（SIS）受破坏的绝缘反铁磁体中生成更丰富的自旋纹理的理论，该磁场易于通过小磁场进行控制。在反铁磁体中，有序矩包含两种类型的磁振子，它们类似于电子自旋而充当内部自由度。SIS断裂引入的Dzyaloshinskii-Moriya相互作用将两个马格诺自由度与马格诺动量耦合在一起。我们提出了一种系统的方法来设计这种纹理，并通过强磁自旋电流对其进行检测，以实现反铁磁存储。