Quantitative evaluation of heating effect on dynamical spin injection using CoFeB/Pt/CoFeB trilayered film

S. Obinata, R. Iimori, K. Ohnishi, T. Kimura

Research output: Contribution to journalArticlepeer-review

Abstract

We have examined a dynamical spin injection in a CoFeB/Pt/CoFeB trilayered structure. Although the contribution of the spin pumping was eliminated by the symmetric spin injection from the upper and lower CoFeB layers, a clear voltage change due to the inverse spin Hall effect has been observed. We find that the observed signal can be quantitatively explained by considering the thermal spin injection due to the heating effect during ferromagnetic resonance (FMR). This innovative demonstration indicates the significant contribution of the FMR heating in the dynamical spin injection.

Original languageEnglish
JournalIEEE Transactions on Magnetics
DOIs
Publication statusAccepted/In press - 2021

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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