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

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

Authors

T.D. Skinner

M. Wang

A.T. Hindmarch

A.C. Irvine

D. Heiss

H. Kurebayashi

A.J. Ferguson



Abstract

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 1nm, 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.

Citation

Skinner, T., Wang, M., Hindmarch, A., Rushforth, A., Irvine, A., Heiss, D., …Ferguson, A. (in press). Spin-orbit torque opposing the Oersted torque in ultrathin Co/Pt bilayers. Applied Physics Letters, 104(6), https://doi.org/10.1063/1.4864399

Journal Article Type Article
Acceptance Date Jan 24, 2014
Online Publication Date Feb 10, 2014
Deposit Date Jun 23, 2016
Publicly Available Date Jun 23, 2016
Journal Applied Physics Letters
Print ISSN 0003-6951
Electronic ISSN 1077-3118
Publisher AIP Publishing
Peer Reviewed Peer Reviewed
Volume 104
Issue 6
Article Number 062401
DOI https://doi.org/10.1063/1.4864399
Public URL http://eprints.nottingham.ac.uk/id/eprint/34353
Publisher URL http://scitation.aip.org/content/aip/journal/apl/104/6/10.1063/1.4864399
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information Spin-orbit torque opposing the Oersted torque in ultrathin Co/Pt bilayers, T.D. Skinner, M. Wang, A.T. Hindmarch, A.W. Rushforth, A.C. Irvine, D. Heiss, H. Kurebayashi, and A.J. Ferguson. Applied Physics Letters 104, 062401 (2014). doi: 10.1063/1.4864399

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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