The spin injection efficiencies in epitaxial Co2MnSi (CMS)/Pt thin films were investigated in spin pumping configuration. The inverse spin Hall (effect) voltage significantly depends on the post-annealing temperature Ta of CMS, which shows one order larger values than those of Fe and CoFe at Ta = 400 °C. The effective spin mixing conductance derived by the analytical model reaches 6.5 × 1019 m-2. Our findings suggest that the Co-based Heusler alloys could be promising material candidates as the spin injection source with spin pumping.
|出版ステータス||Published - 2020 8月 1|
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