Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41467-018-04712-9
Title: Anomalous Hall magnetoresistance in a ferromagnet
Authors: Yang, Y 
Luo, Z 
Wu, H 
Xu, Y 
Li, R.-W
Pennycook, S.J 
Zhang, S
Wu, Y 
Keywords: ferromagnetic material
iron
manganese
platinum
electron
experimental study
magnetization
symmetry
acceleration
anomalous hall magnetoresistance
Article
conductance
diffusion
drift diffusion model
electron
high resolution transmission electron microscopy
magnetism
photoelectron spectroscopy
physical resistance
polarization
theoretical model
thickness
X ray diffraction
Issue Date: 2018
Publisher: Nature Publishing Group
Citation: Yang, Y, Luo, Z, Wu, H, Xu, Y, Li, R.-W, Pennycook, S.J, Zhang, S, Wu, Y (2018). Anomalous Hall magnetoresistance in a ferromagnet. Nature Communications 9 (1) : 2255. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-018-04712-9
Abstract: The anomalous Hall effect, observed in conducting ferromagnets with broken time-reversal symmetry, offers the possibility to couple spin and orbital degrees of freedom of electrons in ferromagnets. In addition to charge, the anomalous Hall effect also leads to spin accumulation at the surfaces perpendicular to both the current and magnetization direction. Here, we experimentally demonstrate that the spin accumulation, subsequent spin backflow, and spin-charge conversion can give rise to a different type of spin current-related spin current related magnetoresistance, dubbed here as the anomalous Hall magnetoresistance, which has the same angular dependence as the recently discovered spin Hall magnetoresistance. The anomalous Hall magnetoresistance is observed in four types of samples: co-sputtered (Fe1-x Mn x )0.6Pt0.4, Fe1-x Mn x /Pt multilayer, Fe1-x Mn x with x = 0.17-0.65 and Fe, and analyzed using the drift-diffusion model. Our results provide an alternative route to study charge-spin conversion in ferromagnets and to exploit it for potential spintronic applications. © 2018 The Author(s).
Source Title: Nature Communications
URI: https://scholarbank.nus.edu.sg/handle/10635/174216
ISSN: 2041-1723
DOI: 10.1038/s41467-018-04712-9
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