论文标题
通过自旋转移扭矩和振荡磁场来调整非共线反铁磁铁的大厅响应
Tuning the Hall response of a noncollinear antiferromagnet via spin-transfer torques and oscillating magnetic fields
论文作者
论文摘要
Kagome晶格抗Fiferromagnets Mn $ _3 $ X（= SN，GE）具有非校准120 $^\ Circ $订购的基态，这引起了强烈的异常大厅响应。已经表明，此响应与磁顺序有关，并且可以通过其操纵。在这里，我们使用应变和自旋转移扭矩的组合来控制磁性，因此在不同手性的状态之间确定性开关。这些手性地面状态中的每一个都有一个异常的霍尔电导率张量，沿不同的方向。此外，我们表明，可以通过振荡磁场获得对应变样品的类似操作，这可能打开了这些材料中光学切换的途径。
The kagome lattice antiferromagnets Mn$_3$X(= Sn, Ge) have a noncollinear 120$^\circ$ ordered ground state, which engenders a strong anomalous Hall response. It has been shown that this response is linked to the magnetic order and can be manipulated through it. Here we use a combination of strain and spin-transfer torques to control the magnetic order and hence switch deterministically between states of different chirality. Each of these chiral ground states has an anomalous Hall conductivity tensor in a different direction. Furthermore, we show that a similar manipulation of the strained sample can be obtained through oscillating magnetic fields, potentially opening a pathway to optical switching in these materials.
