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arXiv 2005.12307cond-mat.str-el
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二维金属手征磁体中的复杂磁序和拓扑霍尔效应

Complex magnetic ordering and associated topological Hall effect in a two-dimensional metallic chiral magnet

Nyayabanta Swain, Munir Shahzad, Pinaki Sengupta

摘要:

受最近在层状异质结构中观察到的室温Skyrmions实验和随后在同一系统中拓扑霍尔效应的演示的启发,我们研究了一个在外部磁场中与局部矩耦合的具有竞争相互作用的巡游电子的极小模型。在强磁电耦合的极限下,电子的快速动力学可以从局部矩的慢速动力学(被视为经典自旋)中解耦,我们分析了多场诱导的磁相位和相关的电子输运性质。我们的研究结果有助于理解所观察到的现象的微观起源,并进一步提供关键的洞察非常规的金属手性磁体的磁输运。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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