Increase in spin-Hall effect and influence of anomalous Nernst effect on spin-Hall magnetoresistance in β-phase and α-phase W100-xTax/CoFeB systems

研究成果: Article査読

3 被引用数 (Scopus)

抄録

We studied the spin-Hall effect in W100-xTax with various Ta compositions for W-Ta alloy/CoFeB/MgO heterostructures by means of spin-Hall magnetoresistance (SMR). We synthesized W-Ta alloys with both α-phase and β-phase by controlling the sputtering condition. We found that, in both α-phase and β-phase W-Ta alloys, the amplitude in SMR signals increases by alloying W with Ta at certain x. The analysis based on the drift-diffusion model reveals that the increase in SMR originates from an enhancement of the spin-Hall angles θ SH. Moreover, we observed the influence of anomalous Nernst effect on SMR for the high-resistive W-Ta/CoFeB systems.

本文言語English
論文番号053008
ジャーナルApplied Physics Express
12
5
DOI
出版ステータスPublished - 2019 5 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

フィンガープリント 「Increase in spin-Hall effect and influence of anomalous Nernst effect on spin-Hall magnetoresistance in β-phase and α-phase W<sub>100-x</sub>Ta<sub>x</sub>/CoFeB systems」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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