Temperature dependence of spin Hall magnetoresistance in thin YIG/Pt films

S. R. Marmion, M. Ali, M. McLaren, D. A. Williams, B. J. Hickey

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

We report on the temperature dependence of the recently discovered spin Hall magnetoresistance in a yttrium iron garnet (YIG)/platinum (Pt) thin film. The YIG/Pt layers are an ideal choice as the combination of an insulating magnetic material and the high spin-orbit interaction in Pt gives a relatively large magnetoresistance and no electrical conduction occurs in the YIG. The temperature dependence of the magnetoresistance was measured between 1.4 K and 280 K from which the temperature dependence of the spin diffusion length in Pt has been extracted. We found that the best agreement between our data and the recently published [Chen, Phys. Rev. B 87, 144411 (2013)PRBMDO1098-012110.1103/ PhysRevB.87.144411] theory of the spin Hall magnetoresistance is given by an assumed Elliot-Yafet mechanism of spin relaxation with temperature-independent spin Hall angle and spin mixing conductance. The best estimate for the spin diffusion length returns values between 0.57 and 3.85 nm. 

Original languageEnglish
Article number220404(R)
JournalPhysical Review B (Condensed Matter)
Volume89
Issue number22
DOIs
Publication statusPublished - 13 Jun 2014
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Fingerprint Dive into the research topics of 'Temperature dependence of spin Hall magnetoresistance in thin YIG/Pt films'. Together they form a unique fingerprint.

  • Cite this

    Marmion, S. R., Ali, M., McLaren, M., Williams, D. A., & Hickey, B. J. (2014). Temperature dependence of spin Hall magnetoresistance in thin YIG/Pt films. Physical Review B (Condensed Matter), 89(22), [220404(R)]. https://doi.org/10.1103/PhysRevB.89.220404