TY - JOUR
T1 - Determination of penetration depth of transverse spin current in ferromagnetic metals by spin pumping
AU - Taniguchi, Tomohiro
AU - Yakata, Satoshi
AU - Imamura, Hiroshi
AU - Ando, Yasuo
PY - 2008/3/1
Y1 - 2008/3/1
N2 - Spin pumping in nonmagnetic/ferromagnetic metal multilayers Is studied both theoretically and experimentally. We show that the line widths of the ferromagnetic resonance (FMR) spectrum depend on the thickness of the ferromagnetic metal layers, which must not be in resonance with the oscillating magnetic field. We also show that the penetration depths of the transverse spin current in ferromagnetic metals can be determined by analyzing the line widths of their FMR spectra. The obtained penetration depths in NiFe, CoFe, and CoFeB were 3.7, 2.5, and 12.0 nm, respectively.
AB - Spin pumping in nonmagnetic/ferromagnetic metal multilayers Is studied both theoretically and experimentally. We show that the line widths of the ferromagnetic resonance (FMR) spectrum depend on the thickness of the ferromagnetic metal layers, which must not be in resonance with the oscillating magnetic field. We also show that the penetration depths of the transverse spin current in ferromagnetic metals can be determined by analyzing the line widths of their FMR spectra. The obtained penetration depths in NiFe, CoFe, and CoFeB were 3.7, 2.5, and 12.0 nm, respectively.
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U2 - 10.1143/APEX.1.031302
DO - 10.1143/APEX.1.031302
M3 - Article
AN - SCOPUS:57049146938
VL - 1
SP - 313021
EP - 313023
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 3
ER -