论文标题
二维金属手性磁铁中的复杂磁性顺序和相关的拓扑厅效应
Complex magnetic ordering and associated topological Hall effect in a two-dimensional metallic chiral magnet
论文作者
论文摘要
通过最近在同一系统中观察到分层异质结构中室温天际的实验以及随后演示拓扑厅效应的实验，我们研究了一个最小的巡回电子模型，并在外部磁场中与竞争性相互作用耦合到当地时刻。在强磁电磁耦合的极限下工作，其中电子的快速动力学可以与局部矩的缓慢动力学（被视为经典旋转）分离，我们分析了这些系统中多场诱导的磁相和相关的电子传输性能。我们的结果有助于了解观察到的现象的显微镜起源，并进一步提供了对金属手性磁铁中非常规磁通型的关键见解。
Motivated by recent experiments on the observation of room temperature skyrmions in a layered heterostructure and subsequent demonstration of topological Hall effect in the same system, we have studied a minimal model of itinerant electrons coupled to local moments with competing interactions in an external magnetic field. Working in the limit of strong magneto-electric coupling where the fast dynamics of the electrons can be decoupled from the slow dynamics of the local moments (treated as classical spins), we analyze the multiple field induced magnetic phases and the associated electronic transport properties in these regimes. Our results help understand the microscopic origin of the observed phenomena and further provide crucial insight into unconventional magneto-transport in metallic chiral magnets.
