论文标题
van der waals Antiferromagnets中的跨宣传旋转泵送和磁通水平吸引力
Cross-sublattice Spin Pumping and Magnon Level Attraction in van der Waals Antiferromagnets
论文作者
论文摘要
从理论上讲，我们从其倾斜基态的分层范德华抗铁磁铁中研究旋转泵送到相邻的正常金属。我们发现所得的直流旋转电流熊沿所有自旋方向贡献。我们的分析允许通过测量两个面内旋转电流组件来检测内和交叉式旋转混合电导。我们进一步表明，可以通过界面工程来实现打破对称性对称性的吉尔伯特阻尼，并引起光学和声学镁模式之间的耗散耦合。这实现了系统中的镁水平吸引力和特殊点。此外，耗散耦合和交叉式旋转泵送，目的是在平面外方向上产生非常规的自旋电流。我们的发现提供了一种提取自旋混合电导矩阵的途径，并发现了范德华（Van der Waals）抗fiferromagnet normal formal formal formal Metal Hybrids提供的独特机会，例如水平吸引力。
We theoretically study spin pumping from a layered van der Waals antiferromagnet in its canted ground state into an adjacent normal metal. We find that the resulting dc spin pumping current bears contributions along all spin directions. Our analysis allows for detecting intra- and cross-sublattice spin-mixing conductances via measuring the two in-plane spin current components. We further show that sublattice symmetry-breaking Gilbert damping can be realized via interface engineering and induces a dissipative coupling between the optical and acoustic magnon modes. This realizes magnon level attraction and exceptional points in the system. Furthermore, the dissipative coupling and cross-sublattice spin pumping contrive to produce an unconventional spin current in the out-of-plane direction. Our findings provide a route to extract the spin mixing conductance matrix and uncovers the unique opportunities, such as level attraction, offered by van der Waals antiferromagnet-normal metal hybrids.
