This title appears in the Scientific Report :
2021
Please use the identifier:
http://hdl.handle.net/2128/27778 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevResearch.3.023089 in citations.
Multistate current-induced magnetization switching in Au/Fe/MgO(001) epitaxial heterostructures
Multistate current-induced magnetization switching in Au/Fe/MgO(001) epitaxial heterostructures
Magnetization switching using in-plane charge current recently has been widely investigated in heavy metal/ferromagnet bilayers with the switching mechanism usually attributed to the action of the spin-orbit coupling. Here we study in-plane current induced magnetization switching in model epitaxial...
Saved in:
Personal Name(s): | Gospodaric, Pika |
---|---|
Młyńczak, E. (Corresponding author) / Soldatov, I. / Kákay, A. / Bürgler, D. E. / Plucinski, L. / Schäfer, R. / Fassbender, J. / Schneider, C. M. | |
Contributing Institute: |
Elektronische Eigenschaften; PGI-6 |
Published in: | Physical review research, 3 (2021) 2, S. 023089 |
Imprint: |
College Park, MD
APS
2021
|
DOI: |
10.1103/PhysRevResearch.3.023089 |
Document Type: |
Journal Article |
Research Program: |
Quantum Computing |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevResearch.3.023089 in citations.
Magnetization switching using in-plane charge current recently has been widely investigated in heavy metal/ferromagnet bilayers with the switching mechanism usually attributed to the action of the spin-orbit coupling. Here we study in-plane current induced magnetization switching in model epitaxial bilayers that consist of Au(001) and Fe(001) grown on MgO(001). We use the planar Hall effect combined with magnetooptical Kerr effect (MOKE) microscopy to investigate magnetic properties of the bilayers and current-induced switching. We show that a current density beyond 1.4×107 A/cm can be employed for reproducible electrical switching of the magnetization between multiple stable states that correspond to different arrangements of magnetic domains with magnetization direction along one of the in-plane easy magnetization axes of the Fe(001) film. Lower current densities result in stable intermediate transversal resistances which are interpreted based on MOKE-microscopy investigations as resulting from the current-induced magnetic domain structure that is formed in the area of the Hall cross. We find that the physical mechanism of the current-induced magnetization switching of the Au/Fe/MgO(001) system at room temperature can be fully explained by the Oersted field, which is generated by the charge current flowing mostly through the Au layer. |