Seminarium wydziałowe (online)

Dnia 2021-04-20 o godzinie 14:15 odbędzie się wykład (seminarium odbędzie się „online” z wykorzystaniem platformy ZOOM), na którym mgr Łukasz Gladczuk z Clarendon Laboratory, Department of Physics, University of Oxford oraz Diamond Light Source, Didcot, Oxfordshire UK wygłosi wykład pt:

„Spin-current and exchange coupling in MgO-based magnetic tunnel junctions”

Serdecznie zapraszamy

Andrzej Maziewski

 

 

Spin-current and exchange coupling in MgO-based magnetic tunnel junctions
Łukasz Gladczuk ^1,2
1 Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, OX1 3PU, UK
2 Diamond Light Source, Didcot, Oxfordshire OX11 0DE, UK

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
Ł.Gladczuk et al. , Phys. Rev. B 103 064416 (2021).