论文标题
拉紧MN $ _3 $ GE的磁性和传输特性
Strain tuning the magnetic and transport properties of Mn$_3$Ge
论文作者
论文摘要
Kagome晶格抗Fiferromagnet Mn $ _3 $ GE具有本地六角形对称性，其订购基态为120 $^\ circ $。这种非上线的基础状态产生了强烈的异常大厅反应。这项工作的主要目标是了解压力对这一反应的影响。我们为Hall Vector提供了一个有效的模型，该模型可作为我们的顺序参数。使用此模型，我们展示了如何使用内部和间平面菌株在恒定磁场处切换大厅响应的符号。此外，我们还研究了这种菌株对自旋波带间隙的影响，并表明可以使用应变来有效地操纵它们，这些菌株可用于调整该系统中的磁响应。
The kagome lattice antiferromagnet Mn$_3$Ge has a local hexagonal symmetry with a 120$^\circ$ ordered ground state. This non-colinear ground state engenders a strong anomalous Hall response. The main goal of this work is to understand the effect of strain on this response. We derive an effective model for the Hall vector which functions as our order parameter. Using this model we show how both intra and inter planar strains can be used to switch the sign of the Hall response at a constant magnetic field. Further, we also investigate the effect of this strain on the spin wave band gaps and show that strain can be used to effectively manipulate them, which can be used to tune the magnon responses in this system.
