Large Rashba spin-orbit coupling in metallic SrTaO${}_3$ thin films

Hikaru Okuma, Yumiko Katayama, Fukunobu Kadowaki +2

Epitaxial thin films of SrTaO${}_3$ with thickness ($t$) smaller than 74 nm were successfully fabricated on an insulator (LaAlO${}_3$)${}_{0.3}$(Sr${}_2$AlTaO${}_6$)${}_{0.7}$ substrate. Films…