TY - JOUR
T1 - Spin-orbit torques in Co/Pd multilayer nanowires
AU - Jamali, Mahdi
AU - Narayanapillai, Kulothungasagaran
AU - Qiu, Xuepeng
AU - Loong, Li Ming
AU - Manchon, Aurelien
AU - Yang, Hyunsoo
PY - 2013/12/9
Y1 - 2013/12/9
N2 - Current induced spin-orbit torques have been studied in ferromagnetic nanowires made of 20 nm thick Co/Pd multilayers with perpendicular magnetic anisotropy. Using Hall voltage and lock-in measurements, it is found that upon injection of an electric current both in-plane (Slonczewski-like) and perpendicular (fieldlike) torques build up in the nanowire. The torque efficiencies are found to be as large as 1.17 and 5 kOe at 108 A/cm2 for the in-plane and perpendicular components, respectively, which is surprisingly comparable to previous studies in ultrathin (∼1 nm) magnetic bilayers. We show that this result cannot be explained solely by spin Hall effect induced torque at the outer interfaces, indicating a probable contribution of the bulk of the Co/Pd multilayer.
AB - Current induced spin-orbit torques have been studied in ferromagnetic nanowires made of 20 nm thick Co/Pd multilayers with perpendicular magnetic anisotropy. Using Hall voltage and lock-in measurements, it is found that upon injection of an electric current both in-plane (Slonczewski-like) and perpendicular (fieldlike) torques build up in the nanowire. The torque efficiencies are found to be as large as 1.17 and 5 kOe at 108 A/cm2 for the in-plane and perpendicular components, respectively, which is surprisingly comparable to previous studies in ultrathin (∼1 nm) magnetic bilayers. We show that this result cannot be explained solely by spin Hall effect induced torque at the outer interfaces, indicating a probable contribution of the bulk of the Co/Pd multilayer.
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U2 - 10.1103/PhysRevLett.111.246602
DO - 10.1103/PhysRevLett.111.246602
M3 - Article
AN - SCOPUS:84890277165
SN - 0031-9007
VL - 111
JO - Physical review letters
JF - Physical review letters
IS - 24
M1 - 246602
ER -