This paper is devoted to numerical simulations of the magnetization dynamics driven by a spin-polarized current in extended ferromagnetic multilayers when a point-contact setup is used. We present (i) detailed analysis of methodological problems arising by such simulations and (ii) physical results obtained on a system similar to that studied in Rippard et al., Phys. Rev. Lett., v. 92, 027201 (2004). We demonstrate that the usage of a standard Slonczewski formalism for the phenomenological treatment of a spin-induced torque leads to a qualitative disagreement between simulation results and experimental observations and discuss possible reasons for this discrepancy.
@article{arxiv.cond-mat/0601099,
title = {Micromagnetic simulations of the magnetization precession induced by a spin polarized current in a point contact geometry},
author = {D. V. Berkov and N. L. Gorn},
journal= {arXiv preprint arXiv:cond-mat/0601099},
year = {2015}
}
Comments
Invited paper on MMM2005 (San Jose); accepted for publication in J. Applied Physics