TY - JOUR
T1 - Spin-transfer-induced microwave oscillations in spin valves with ferromagnetic nano-contacts in oxide spacer layer
AU - Doi, Masaaki
AU - Endo, Hiroaki
AU - Shirafuji, Kazushige
AU - Kawasaki, Shohei
AU - Sahashi, Masashi
AU - Fuke, Hiromi Niu
AU - Iwasaki, Hitoshi
AU - Imamura, Hiroshi
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/3/9
Y1 - 2011/3/9
N2 - We observed microwave oscillations induced by spin-transfer torque in spin valves with ferromagnetic nano-contacts in oxide spacer layer near the antiparallel magnetic moment configuration between the free and the reference layers. The frequency of the microwave oscillation ranges from 4.2 to 9.7 GHz and the Q-value of the level peak reaches as high as around 300. We showed that the frequency of the oscillation depends on the applied current and magnetic field, which can be qualitatively explained by considering the response of the domain walls confined in nano-contacts to the applied current and magnetic field.
AB - We observed microwave oscillations induced by spin-transfer torque in spin valves with ferromagnetic nano-contacts in oxide spacer layer near the antiparallel magnetic moment configuration between the free and the reference layers. The frequency of the microwave oscillation ranges from 4.2 to 9.7 GHz and the Q-value of the level peak reaches as high as around 300. We showed that the frequency of the oscillation depends on the applied current and magnetic field, which can be qualitatively explained by considering the response of the domain walls confined in nano-contacts to the applied current and magnetic field.
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U2 - 10.1088/0022-3727/44/9/092001
DO - 10.1088/0022-3727/44/9/092001
M3 - Article
AN - SCOPUS:79951793507
VL - 44
JO - Journal Physics D: Applied Physics
JF - Journal Physics D: Applied Physics
SN - 0022-3727
IS - 9
M1 - 092001
ER -