2024
DOI: 10.35848/1882-0786/ad7932
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Large Rashba spin–orbit coupling in metallic SrTaO3 thin films

Hikaru Okuma,
Yumiko Katayama,
Fukunobu Kadowaki
et al.

Abstract: We fabricated conductive SrTaO3 epitaxial films on insulator substrates and measured the Rashba parameter using weak anti-localization analysis. The Rashba parameter, reaching up to 9.9 × 10−13 eVm, is the highest among metallic oxides and is comparable to the LaAlO3/SrTiO3 interface, which is widely used in Rashba effect studies. This indicates the potential for oxide-based spintronic devices. To use them as devices, it is important to investigate how film thickness affects the resistivity. Films ranging from… Show more

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