Details

Autor(en) / Beteiligte

• Skinner, T. D.
• Wang, M.
• Hindmarch, A. T.
• Rushforth, A. W.
• Irvine, A. C.
• Heiss, D.
• Kurebayashi, H.
• Ferguson, A. J.

Titel

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

Ist Teil von

• Applied physics letters, 2014-02, Vol.104 (6)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2014

Quelle

American Institute of Physics (AIP) Journals

Beschreibungen/Notizen

• Current-induced torques in ultrathin Co/Pt bilayers were investigated using an electrically driven ferromagnetic resonance technique. The angle dependence of the resonances, detected by a rectification effect as a voltage, was 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 sum of the field-like torque and Oersted torque reversed. This observation is consistent with the emergence of a Rashba spin orbit torque in ultra-thin bilayers.