Soft Matter and Complex Systems Seminar
sala 1.40, ul. Pasteura 5
2021-03-19 (09:30) 
Łukasz Gładczuk (University of Oxford & Diamond Light Source)
Likelihood ratio testing with applications to MgO-based magnetic tunnel junctions experimental data
Heterostructures composed of ferromagnetic layers that are mutually interacting through a non-magnetic spacer are at the core of magnetic sensor and memory devices. Such devices can exhibit different types of coupling between magnetic layers, such as: exchange coupling and spin-current mediated coupling. We used the technique of x-ray detected ferromagnetic resonance (XFMR) to study the dynamics of a Co/MgO/Permalloy magnetic tunnel junction (MTJ). The experimental results were quantitatively compared to the Landau-Lifshitz-Gilbert-Slonczewski model where an in-depth statistical analysis based on a likelihood ratio test was employed to determine the presence of spin-current mediated coupling between the two magnetic layers
Phys. Rev. B 103 064416
The seminar will be conducted on Zoom
https://us02web.zoom.us/j/82784273907
Phys. Rev. B 103 064416
The seminar will be conducted on Zoom
https://us02web.zoom.us/j/82784273907