标题： 倾斜反铁磁体中自旋轨道扭矩对太赫兹自旋波的各向异性操控 显示英文标题

标题： Anisotropic manipulation of terahertz spin-waves by spin-orbit torque in a canted antiferromagnet

摘要： 我们从理论上和数值上阐明了在具有双轴各向异性和Dzyaloshinskii-Moriya相互作用的反铁磁材料（AFM）中，通过电场对自旋波的控制。 AFM中的自旋波色散表现为分叉谱，包含不同频率的高频带和低频带。 利用由铂和AFM组成的异质结构，我们展示了通过具有三维自旋极化的自旋电流对自旋波带的各向异性控制，涵盖了共振和传播的波模式。 此外，借助受限几何结构，我们探讨了在从数十千兆赫到亚太赫兹频率范围内的自旋波控制的可能性。 我们研究结果的意义表明，开发一种具有电调谐能力的太赫兹波源具有潜力，从而促进其在超高速、宽带和无线通信技术中的应用。 显示英文摘要

摘要： We theoretically and numerically elucidate the electrical control over spin waves in antiferromagnetic materials (AFM) with biaxial anisotropies and Dzyaloshinskii-Moriya interactions. The spin wave dispersion in an AFM manifests as a bifurcated spectrum with distinct high-frequency and low-frequency bands. Utilizing a heterostructure comprised of platinum and the AFM, we demonstrate anisotropic control of spin-wave bands via spin currents with three-dimensional spin polarizations, encompassing both resonant and propagating wave modes. Moreover, leveraging the confined geometry, we explore the possibility of controlling spin waves within a spectral domain ranging from tens of gigahertz to sub-terahertz frequencies. The implications of our findings suggest the potential for developing a terahertz wave source with electrical tunability, thereby facilitating its incorporation into ultrafast, broadband, and wireless communication technologies.