空中骑兵
物理
拓扑(电路)
霍尔效应
凝聚态物理
散射
自旋(空气动力学)
磁场
量子力学
数学
热力学
组合数学
作者
Papa Birame Ndiaye,Collins Ashu Akosa,Aurélien Manchon
出处
期刊:Physical review
[American Physical Society]
日期:2017-02-23
卷期号:95 (6)
被引量:53
标识
DOI:10.1103/physrevb.95.064426
摘要
We carry out a throughout study of the topological Hall and topological spin Hall effects in disordered skyrmionic systems: the dimensionless (spin) Hall angles are evaluated across the energy band structure in the multiprobe Landauer-B\"uttiker formalism and their link to the effective magnetic field emerging from the real space topology of the spin texture is highlighted. We discuss these results for an optimal skyrmion size and for various sizes of the sample and found that the adiabatic approximation still holds for large skyrmions as well as for few atomic size-nanoskyrmions. Finally, we test the robustness of the topological signals against disorder strength and show that topological Hall effect is highly sensitive to momentum scattering.
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