Back to Search
Start Over
Impact of trace amounts of interfacial oxidation on the spin–orbit torque in the Co/Pt heterostructures
- Source :
- Applied Physics Letters. 118:132410
- Publication Year :
- 2021
- Publisher :
- AIP Publishing, 2021.
-
Abstract
- We found that the exposure of a Co/Pt bilayer to air will result in a trace amount of oxidation at the Co/Pt interface, while the Pt layer is immune to oxidation. The appearance of CoOx results in a negative spin Hall magnetoresistance and unconventional spin–orbit torques (SOTs), which are observed through temperature-dependent transport and spin-torque ferromagnetic resonance measurements. These results can be understood by considering CoOx as an individual magnetic layer between Pt and Co, with two important characteristics: (1) its magnetization is aligned in the plane that is perpendicular to the magnetization of Co and (2) the spin transparency of CoOx increases with increasing temperature. These results help us understand the features of spin transport at the interface when oxidation occurs and further indicate that trace amounts of oxidation can be a highly effective method to control SOT in magnetic heterostructures.
- Subjects :
- 010302 applied physics
Materials science
Physics and Astronomy (miscellaneous)
Trace Amounts
Condensed matter physics
Magnetoresistance
Bilayer
Heterojunction
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Ferromagnetic resonance
Condensed Matter::Materials Science
Magnetization
0103 physical sciences
Perpendicular
Condensed Matter::Strongly Correlated Electrons
0210 nano-technology
Spin (physics)
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 118
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........58d59465633a42cb461f2f630a91a95c