Tailoring the Growth of ${\hat{I}}^2$-Tungsten Using Substrate Bias and Its Effect on FMR-Driven Spin Pumping in ${\hat{I}}^2$-W/Py Heterostructures

Abhay Singh Rajawat, Naim Ahmad, Risvana Nasril +9

${\hat{I}}^2$-Tungsten (${\hat{I}}^2$-W), an A15 cubic phase of tungsten, exhibits a giant spin Hall angle compared to its bcc-phase $\hat{I}\pm$-Tungsten ($\hat{I}\pm$-W), making high-quality ${\hat{I}}^2$-W films desirabl…