Current-Induced Nanomagnet Dynamics for Magnetic Fields Perpendicular to the Sample Plane

S. I. Kiselev; J. C. Sankey; I. N. Krivorotov; N. C. Emley; M. Rinkoski; C. Perez; R. A. Buhrman; D. C. Ralph

doi:10.1103/PhysRevLett.93.036601

Current-Induced Nanomagnet Dynamics for Magnetic Fields Perpendicular to the Sample Plane

Materials Science 2009-11-10 v1

Authors: S. I. Kiselev , J. C. Sankey , I. N. Krivorotov , N. C. Emley , M. Rinkoski , C. Perez , R. A. Buhrman , D. C. Ralph

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Abstract

We present electrical measurements of high-frequency magnetic dynamics excited by spin-polarized currents in Co/Cu/Ni80Fe20 nanopillar devices, with a magnetic field applied perpendicular to the sample layers. As a function of current and magnetic field, the dynamical phase diagram contains several distinguishable precessional modes and also static magnetic states. Using detailed comparisons with numerical simulations, we provide rigorous tests of the theory of spin-transfer torques.

Keywords

spin current magnetic nanoparticles spintronics

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@article{arxiv.cond-mat/0403100,
  title  = {Current-Induced Nanomagnet Dynamics for Magnetic Fields Perpendicular to the Sample Plane},
  author = {S. I. Kiselev and J. C. Sankey and I. N. Krivorotov and N. C. Emley and M. Rinkoski and C. Perez and R. A. Buhrman and D. C. Ralph},
  journal= {arXiv preprint arXiv:cond-mat/0403100},
  year   = {2009}
}

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4 pages, 3 figures

Current-Induced Nanomagnet Dynamics for Magnetic Fields Perpendicular to the Sample Plane

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