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Odd-parity linear magnetoresistance and the planar Hall effect

Wang, Yishu and Lee, Patrick A. and Silevitch, D. M. and Gómez, F. and Cooper, S. E. and Ren, Y. and Yan, J.-Q. and Mandrus, D. and Rosenbaum, T. F. and Feng, Yejun (2019) Odd-parity linear magnetoresistance and the planar Hall effect. . (Unpublished)

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The phenomena of odd-parity magnetoresistance and the planar Hall effect are deeply entwined with ferromagnetism. The intrinsic magnetization of the ordered state permits these unusual and rarely observed manifestations of Onsager's theorem when time reversal symmetry is broken at zero applied field. Here we study two classes of ferromagnetic materials, rare-earth magnets with high intrinsic coercivity and antiferromagnetic pyrochlores with strongly-pinned ferromagnetic layers at domain walls, which both exhibit odd-parity magnetoresistive behavior. The peculiar angular variation of the response with respect to the relative alignments of the magnetization, magnetic field, and current reveal the two underlying microscopic mechanisms: spin-polarization-dependent scattering of a Zeeman-shifted Fermi surface and magnetoresistance driven by the anomalous velocity physics usually associated with the anomalous Hall effect.

Item Type:Report or Paper (Discussion Paper)
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URLURL TypeDescription Paper
Silevitch, D. M.0000-0002-6347-3513
Feng, Yejun0000-0003-3667-056X
Additional Information:Funding: Y.F. acknowledges support from the Okinawa Institute of Science and Technology Graduate University (OIST), with subsidy funding from the Cabinet Office, Government of Japan. We also acknowledge the Mechanical Engineering and Microfabrication Support Section of OIST for the usage of shared equipment. The work at Caltech was supported by National Science Foundation Grant No. DMR-1606858. P.A.L. acknowledges support from the US Department of Energy, Basic Energy Sciences, Grant No. DE-FG02-03ER46076. J.-Q. Y. and D.M. acknowledge support from the US Department of Energy, Office of Science, Basic Energy Sciences, Division of Materials Sciences and Engineering. The work at the Advanced Photon Source of Argonne National Laboratory was supported by the US Department of Energy Basic Energy Sciences under Contract No. NEAC02-06CH11357. Author contributions: Y.W., Y.F., and T.F.R. conceived of the research; J.-Q.Y. and D.M provided osmate samples; Y.W., Y.F., D.M.S., F.G., S.E.C., and Y.R. performed experiments; P.A.L., Y.F., and Y.W. developed the theoretical interpretation; Y.W., Y.F., P.A.L., and T.F.R. prepared the manuscript. Data and materials availability: All data is available in the main text or the supplementary materials.
Funding AgencyGrant Number
Okinawa Institute of Science and TechnologyUNSPECIFIED
Government of JapanUNSPECIFIED
Department of Energy (DOE)DE-FG02-03ER46076
Department of Energy (DOE)NEAC02-06CH11357
Record Number:CaltechAUTHORS:20190624-074905872
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96648
Deposited By: Tony Diaz
Deposited On:24 Jun 2019 17:12
Last Modified:24 Jun 2019 17:12

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