Browsing by Author "Mendes, J. B. S."
Now showing 1 - 7 of 7
Results Per Page
Sort Options
- ItemElectrical detection of ferromagnetic resonance in single layers of permalloy : evidence of magnonic charge pumping(2015) Azevedo, A.; Cunha, R. O.; Estrada, F.; Santos, O.; Mendes, J. B. S.; Vilela, L. H.; Rodríguez Suárez, Roberto; Rezende, S. M.
- ItemExploring orbital-charge conversion mediated by interfaces with CuOx through spin-orbital pumping(2024) Santos, E.; Abrao, J. E.; Vieira, A. S.; Mendes, J. B. S.; Rodriguez-Suarez, R. L.; Azevedo, A.We explore the impact of different materials on orbital-charge conversion in heterostructures with a naturally oxidized copper capping layer. Introducing a thin layer of CuOx (3 nm) to the yttrium iron garnet (YIG)/W heterostructure resulted in a notable decrease in signal when employing the spin pumping (SP) technique. This contrasts with prior findings in YIG/Pt, where the addition of CuOx (3 nm) led to a significant signal enhancement. Conversely, the introduction of the same CuOx (3 nm) layer to YIG/Ti (4 nm) structure showed no change in the SP signal. This lack of change is attributed to the fact that Ti, unlike Pt, does not generate an orbital current at the Ti/CuOx interface due to its weaker spin-orbit coupling. Notably, incorporating the CuOx (3 nm) layer on top of Si/Py (5 nm)/Pt (4 nm) structures resulted in a substantial increase in the spin pumping signal. However, in Si/CuOx (3 nm)/Pt (4 nm)/Py (5 nm) structures, the signal exhibited a decrease. Finally, we applied a phenomenological model of the spin (orbital) Hall effect in YIG/heavy-metal systems to refine our data. These discoveries have the potential to advance research in the innovative field of orbitronics and contribute to the development of new technologies based on spin-orbital conversion.
- ItemMagnon dispersion relations in the noncollinear antiferromagnet IrMn3(2020) Rezende, S. M.; Mendes, J. B. S.; Maior, D. S.; Abrao, J. E.; Azevedo, A.; Rodríguez Suárez, Roberto
- ItemMagnon-mediated spin currents in Tm3Fe5O12/Pt with perpendicular magnetic anisotropy(2020) Vilela, G. L. S.; Abrao, J. E.; Santos, E.; Yao, Y.; Mendes, J. B. S.; Rodríguez Suárez, Roberto; Rezende, S. M.; Han, W.; Azevedo, A.; Moodera, J. S.
- ItemSpin Seebeck effect in the antiferromagnet nickel oxide at room temperature(2017) Holanda, J.; Maior, D. S.; Santos, O. Alves.; Vilela Leao, L. H.; Mendes, J. B. S.; Azevedo, A.; Rodríguez Suárez, Roberto; Rezende, S. M.
- ItemSpin-current to charge-current conversion and magnetoresistance in a hybrid structure of graphene and yttrium iron garnet(2015) Mendes, J. B. S.; Alves Santos, O.; Meireles, L. M.; Lacerda, R. G.; Vilela Leao, L. H.; Machado, F. L. A.; Rodríguez Suárez, Roberto; Azevedo, A.; Rezende, S. M.
- ItemThe role of metallic nanoparticles in the enhancement of the spin Hall magnetoresistance in YIG/Pt thin films(2018) Gamino, M.; Silva, E. F.; Alves Santos, O.; Mendes, J. B. S.; Rodriguez-Suarez, R. L.; Machado, F. L. A.; Azevedo, A.; Rezende, S. M.