2007/08/31 by Tomohiro Taniguchi, Satoshi Yakata, Hiroshi Imamura +1 · 54 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Electron #Ferromagnetic resonance #Ferromagnetism #Magnetic Properties and Applications #Magnetic field #Magnetic properties of thin films #Magnetization #Materials science #Metal #Metallurgy #Optics #Penetration (warfare) #Penetration depth #Physics #Quantum and electron transport phenomena #Spectral line #Spin (aerodynamics) #Spin Hall effect #Spin current #Spin polarization #Spin pumping #Transverse plane #cond-mat.mes-hall #cond-mat.other
paper · pdf · doi:10.1143/apex.1.031302
published in Applied Physics Express 1, 031302 (Institute of Physics) · 4 pages, 2 figures,
openalex publication_date 2008/03/14 · arxiv created 2008/03/17 · arxiv updated 2015/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.