Modulation of spin–orbit torque by insertion of a NiO layer in a Pt/Co structure formed on Al2O3 and Si/SiO x substrate

Autor:	Toshiaki Morita, Kento Hasegawa, Tomohiro Koyama, Daichi Chiba
Rok vydání:	2022
Předmět:	Physics and Astronomy (miscellaneous) General Engineering General Physics and Astronomy
Zdroj:	Japanese Journal of Applied Physics. 61:070908
ISSN:	1347-4065 0021-4922
DOI:	10.35848/1347-4065/ac748e
Popis:	In this study, we investigated the modulation of the spin–orbit torque (SOT) caused by inserting the NiO layer at the Pt/Co interface. A similar Pt/NiO/Co structure was deposited on two different substrates, Al2O3 and Si/SiO x substrates. We found that the damping-like torque of the Al2O3 type sample is almost independent of NiO thickness (t NiO) when t NiO x type monotonically decreased with increasing t NiO. The X-ray diffraction measurement revealed that the degree of interface roughness varies between these types. This suggests that the effect of the NiO insertion on the SOT is associated with the interface roughness.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::01f9060cdf4756a49a2fce0442c8f7b2 https://doi.org/10.35848/1347-4065/ac748e Zobrazit plný text záznamu