TY - JOUR
T1 - Spin-torque ferromagnetic resonance in electrochemically etched metallic device
AU - Suzuki, Ryuki
AU - Haku, Satoshi
AU - Hayashi, Hiroki
AU - Ando, Kazuya
PY - 2020/4/1
Y1 - 2020/4/1
N2 - We demonstrate the quantification of spin-orbit torque efficiencies using spin-torque ferromagnetic resonance (ST-FMR) combined with electrochemical etching of a Fe/Pt bilayer. The electrochemical etching of the ST-FMR device using an ionic liquid enables to study spin-orbit effective fields, as well as an Oersted field, by varying the ferromagnetic-layer thickness. This allows to disentangle the field-like (FL) effective field and Oersted field, enabling to determine the damping-like and FL torque efficiencies in the single device. This robust technique opens a possibility to explore the spin-orbit torques in exotic materials and systems.
AB - We demonstrate the quantification of spin-orbit torque efficiencies using spin-torque ferromagnetic resonance (ST-FMR) combined with electrochemical etching of a Fe/Pt bilayer. The electrochemical etching of the ST-FMR device using an ionic liquid enables to study spin-orbit effective fields, as well as an Oersted field, by varying the ferromagnetic-layer thickness. This allows to disentangle the field-like (FL) effective field and Oersted field, enabling to determine the damping-like and FL torque efficiencies in the single device. This robust technique opens a possibility to explore the spin-orbit torques in exotic materials and systems.
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U2 - 10.35848/1882-0786/ab8347
DO - 10.35848/1882-0786/ab8347
M3 - Article
AN - SCOPUS:85084930264
SN - 1882-0778
VL - 13
JO - Applied Physics Express
JF - Applied Physics Express
IS - 4
M1 - 043007
ER -