Spin-orbit torque opposing the Oersted torque in ultrathin Co/Pt bilayers

Autor: Skinner, T. D., Wang, M., Hindmarch, A. T., Rushforth, A. W., Irvine, A. C., Heiss, D., Kurebayashi, H., Ferguson, A. J.
Rok vydání: 2013
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1063/1.4864399
Popis: Current-induced torques in ultrathin Co/Pt bilayers were investigated using an electrically driven FMR technique. The angle dependence of the resonances, detected by a rectification effect as a voltage, were analysed to determine the symmetries and relative magnitudes of the spin-orbit torques. Both anti-damping (Slonczewski) and field-like torques were observed. As the ferromagnet thickness was reduced from 3 to 1 nm, the sign of the field-like torque reversed. This observation is consistent with the emergence of a Rashba spin orbit torque in ultra-thin bilayers.
Databáze: arXiv