Pennycook, Stephen J.
AffiliationUniv Arizona, Dept Phys
MetadataShow full item record
PublisherNATURE PUBLISHING GROUP
CitationYang, Y., Luo, Z., Wu, H., Xu, Y., Li, R. W., Pennycook, S. J., ... & Wu, Y. (2018). Anomalous Hall magnetoresistance in a ferromagnet. Nature communications, 9(1), 2255. https://doi.org/10.1038/s41467-018-04712-9
Rights© The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractThe 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-xMnx)(0.6)Pt-0.4, Fe1-xMnx/Pt multilayer, Fe1-xMnx 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.
VersionFinal published version
SponsorsSingapore National Research Foundation under its Competitive Research Programe [NRF-CRP10-2012-03]; Ministry of Education, Singapore under its Tier 2 Grant [MOE2013-T2-2-096]; U.S. National Science Foundation [ECCS-1708180]; National University of Singapore
- Large spin Hall magnetoresistance and its correlation to the spin-orbit torque in W/CoFeB/MgO structures.
- Authors: Cho S, Baek SC, Lee KD, Jo Y, Park BG
- Issue date: 2015 Oct 1
- Current-induced switching in a magnetic insulator.
- Authors: Avci CO, Quindeau A, Pai CF, Mann M, Caretta L, Tang AS, Onbasli MC, Ross CA, Beach GS
- Issue date: 2017 Mar
- Effect of quantum tunneling on spin Hall magnetoresistance.
- Authors: Ok S, Chen W, Sigrist M, Manske D
- Issue date: 2017 Feb 22
- Anomalous spin-orbit torques in magnetic single-layer films.
- Authors: Wang W, Wang T, Amin VP, Wang Y, Radhakrishnan A, Davidson A, Allen SR, Silva TJ, Ohldag H, Balzar D, Zink BL, Haney PM, Xiao JQ, Cahill DG, Lorenz VO, Fan X
- Issue date: 2019 Sep
- Hanle Magnetoresistance in Thin Metal Films with Strong Spin-Orbit Coupling.
- Authors: Vélez S, Golovach VN, Bedoya-Pinto A, Isasa M, Sagasta E, Abadia M, Rogero C, Hueso LE, Bergeret FS, Casanova F
- Issue date: 2016 Jan 8