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arXiv 1807.05040cond-mat.mtrl-sci
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畴壁和Skyrmion的手征和拓扑轨道磁性的工程化

Engineering Chiral and Topological Orbital Magnetism of Domain Walls and Skyrmions

Fabian R. Lux, Frank Freimuth, Stefan Blügel, Yuriy Mokrousov

摘要:

缓慢移动通过手性磁织构的电子可以有效地描述为好像它们受到来自实空间拓扑的电磁场的影响。这种绝热观点在预测手征磁体的物理性质方面是非常成功的。在这里,基于严格的量子力学方法,我们解开出现的手性和拓扑轨道磁性在一维和二维自旋系统。我们发现在绝热极限下量子化的轨道磁性可以理解为对出射磁场的Landau-Peierls响应。我们的中心结果是,在界面skyrmions和畴壁的自旋-轨道相互作用,可以用来调整轨道磁性的数量级合并的实空间拓扑结构的拓扑结构在倒易空间。我们的研究结果指出了手征自旋系统轨道性质实验工程的路线,从而为手征轨道电子学领域铺平了道路。

英文摘要:

Electrons which are slowly moving through chiral magnetic textures can effectively be described as if they where influenced by electromagnetic fields emerging from the real-space topology. This adiabatic viewpoint has been very successful in predicting physical properties of chiral magnets. Here, based on a rigorous quantum-mechanical approach, we unravel the emergence of chiral and topological orbital magnetism in one- and two-dimensional spin systems. We uncover that the quantized orbital magnetism in the adiabatic limit can be understood as a Landau-Peierls response to the emergent magnetic field. Our central result is that the spin-orbit interaction in interfacial skyrmions and domain walls can be used to tune the orbital magnetism over orders of magnitude by merging the real-space topology with the topology in reciprocal space. Our findings point out the route to experimental engineering of orbital properties of chiral spin systems, thereby paving the way to the field of chiral orbitronics.

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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