TY - JOUR
T1 - Anomalous Hall magnetoresistance in a ferromagnet
AU - Yang, Yumeng
AU - Luo, Ziyan
AU - Wu, Haijun
AU - Xu, Yanjun
AU - Li, Run Wei
AU - Pennycook, Stephen J.
AU - Zhang, Shufeng
AU - Wu, Yihong
N1 - Funding Information:
Y.H.W. would like to acknowledge support by the Singapore National Research Foundation under its Competitive Research Programe (Grant No. NRF-CRP10-2012-03) and Ministry of Education, Singapore under its Tier 2 Grant (Grant No. MOE2013-T2-2- 096). S.Z. is supported by U.S. National Science Foundation under Grant No. ECCS-1708180. S.J.P. is grateful to the National University of Singapore for funding. We thank Shengyuan A. Yang of Singapore University of Technology and Design for fruitful discussions. Y.H.W. is a member of the Singapore Spintronics Consortium (SG-SPIN).
Funding Information:
Y.H.W. would like to acknowledge support by the Singapore National Research Foundation under its Competitive Research Programe (Grant No. NRF-CRP10-2012-03) and Ministry of Education, Singapore under its Tier 2 Grant (Grant No. MOE2013-T2-2-096). S.Z. is supported by U.S. National Science Foundation under Grant No. ECCS-1708180. S.J.P. is grateful to the National University of Singapore for funding. We thank Shengyuan A. Yang of Singapore University of Technology and Design for fruitful discussions. Y.H.W. is a member of the Singapore Spintronics Consortium (SG-SPIN).
Publisher Copyright:
© 2018 The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - 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.
AB - 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.
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U2 - 10.1038/s41467-018-04712-9
DO - 10.1038/s41467-018-04712-9
M3 - Article
C2 - 29884868
AN - SCOPUS:85048266143
VL - 9
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 2255
ER -