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Volumn 91, Issue 2, 2015, Pages

Modulation of pure spin currents with a ferromagnetic insulator

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EID: 84921048040     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.91.020403     Document Type: Article
Times cited : (37)

References (48)
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    • X. J. Wang, H. Zou, and Y. Ji, Phys. Rev. B 81, 104409 (2010); PRBMDO 1098-0121 10.1103/PhysRevB.81.104409
    • (2010) Phys. Rev. B , vol.81 , pp. 104409
    • Wang, X.J.1    Zou, H.2    Ji, Y.3
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    • 0001317947 scopus 로고    scopus 로고
    • L. Berger, Phys. Rev. B 54, 9353 (1996). 10.1103/PhysRevB.54.9353
    • (1996) Phys. Rev. B , vol.54 , pp. 9353
    • Berger, L.1
  • 39
    • 84921036943 scopus 로고    scopus 로고
    • The YIG was grown by liquid phase epitaxy on a (111) gadolinium gallium garnet (GGG) single crystal at Innovent e.V. (Jena, Germany).
    • The YIG was grown by liquid phase epitaxy on a (111) gadolinium gallium garnet (GGG) single crystal at Innovent e.V. (Jena, Germany).
  • 40
    • 84921036942 scopus 로고    scopus 로고
    • See Supplemental Material at for experimental details, control experiments, and theory.
    • See Supplemental Material at http://link.aps.org/supplemental/10.1103/PhysRevB.91.020403 for experimental details, control experiments, and theory.
  • 42
    • 84921036941 scopus 로고    scopus 로고
    • A modulation in (Equation presented) originating from the rotation of magnetization of the Co electrodes (angles (Equation presented) from the easy axis defined by the shape anisotropy) would be given by (Equation presented)NL∝cosθ, where θ is the relative angle between Co magnetizations. The observed ∼8% modulation would correspond to θ ∼ 23°. Since (Equation presented) in the P case, whereas in the AP case (Equation presented), this would lead to a different amplitude modulation not observed in our experiment. Only in the special case where the narrower electrode does not rotate at all (Equation presented) would the modulations corresponding to the P and AP cases be identical. The wider electrode should then rotate as much as (Equation presented), which has been ruled out by MOKE microscopy as described in Ref. [37]
    • A modulation in (Equation presented) originating from the rotation of magnetization of the Co electrodes (angles (Equation presented) from the easy axis defined by the shape anisotropy) would be given by (Equation presented)NL∝cosθ, where θ is the relative angle between Co magnetizations. The observed ∼8% modulation would correspond to θ ∼ 23°. Since (Equation presented) in the P case, whereas in the AP case (Equation presented), this would lead to a different amplitude modulation not observed in our experiment. Only in the special case where the narrower electrode does not rotate at all (Equation presented) would the modulations corresponding to the P and AP cases be identical. The wider electrode should then rotate as much as (Equation presented), which has been ruled out by MOKE microscopy as described in Ref. [37].


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