Research ArticleAPPLIED PHYSICS

Observation of spin-orbit magnetoresistance in metallic thin films on magnetic insulators

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Science Advances  05 Jan 2018:
Vol. 4, no. 1, eaao3318
DOI: 10.1126/sciadv.aao3318
  • Fig. 1 Sample characterization.

    (A) AFM image of YIG(10)/GGG (RMS roughness, 0.127 nm). (B) AFM image of Pt(0.4)/YIG(10)/GGG (RMS roughness, 0.733 nm). (C) HRTEM image of the Au(3)/Cu(4)[Pt(0.4)]/YIG heterostructure, where Au is used to prevent the oxidation.

  • Fig. 2 Field-dependent magnetization and transport measurements.

    Magnetic hysteresis loops of (A) YIG(10)/GGG with field in-plane and (B) YIG(400)/GGG with field out-of-plane. ρ measured on the Cu(2)[Pt(0.4)]/YIG(10)/GGG sample for H applied along the (C) x axis, y axis, and (D) z axis, respectively.

  • Fig. 3 Angular-dependent MR measurements.

    (A) Angular-dependent MR measurements in the xy, yz, and xz planes for Cu(3)[Pt(0.4)]/YIG. The solid lines are the Boltzmann simulation results. (B) Angular-dependent MR measurements in the xy plane for several control samples.

  • Fig. 4 Cu thickness– and Pt thickness–dependent transport measurements.

    (A) Angular-dependent MR measurements in the xy plane for Cu(tCu)[Pt(0.4)]/YIG and Cu(3)/Pt(tPt)/YIG samples. (B) Cu thickness dependence of the MR ratio and ρ for Cu(tCu)[Pt(0.4)]/YIG. The solid lines are the Boltzmann simulation results. (C) Pt layer thickness dependence of the MR ratio and ρ for Cu(3)/Pt(tPt)/YIG. The solid lines are guide to the eyes.

Supplementary Materials

  • Supplementary material for this article is available at http://advances.sciencemag.org/cgi/content/full/4/1/eaao3318/DC1

    section S1. AFM images of Cu(tCu)[Pt (0.4)]/YIG(10)/GGG(111)

    section S2. Magnetic properties of the YIG films

    section S3. SMR in Pt/YIG

    section S4. SMR and AFM image of Au/YIG

    section S5. First-principles calculations

    section S6. Boltzmann simulations

    fig. S1. AFM images of Cu(tCu)[Pt(0.4)]/YIG(10)/GGG (111).

    fig. S2. FMR of the YIG films.

    fig. S3. SMR in Pt/YIG.

    fig. S4. SMR and AFM image of Au/YIG.

    fig. S5. The band structures of Cu, Au/Cu/Au, and Pt/Cu/Pt.

    fig. S6. The spin textures of outer and inner bands.

    fig. S7. The Rashba splitting in Cu/Pt/Cu.

    fig. S8. Specular and diffusive interface scattering in the NM/FI bilayer.

    fig. S9. AFM image of Ag(0.7)/YIG and MR of Cu(3)[Ag(0.7)]/YIG.

    References (3551)

  • Supplementary Materials

    This PDF file includes:

    • section S1. AFM images of Cu(tCu)Pt (0.4)/YIG(10)/GGG(111)
    • section S2. Magnetic properties of the YIG films
    • section S3. SMR in Pt/YIG
    • section S4. SMR and AFM image of Au/YIG
    • section S5. First-principles calculations
    • section S6. Boltzmann simulations
    • fig. S1. AFM images of Cu(tCu)Pt(0.4)/YIG(10)/GGG (111).
    • fig. S2. FMR of the YIG films.
    • fig. S3. SMR in Pt/YIG.
    • fig. S4. SMR and AFM image of Au/YIG.
    • fig. S5. The band structures of Cu, Au/Cu/Au, and Pt/Cu/Pt.
    • fig. S6. The spin textures of outer and inner bands.
    • fig. S7. The Rashba splitting in Cu/Pt/Cu.
    • fig. S8. Specular and diffusive interface scattering in the NM/FI bilayer.
    • fig. S9. AFM image of Ag(0.7)/YIG and MR of Cu(3)Ag(0.7)/YIG.
    • References (35–51)

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