Abstract | ||
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AbstractIn this paper, we develop a mean-field model for describing the dynamics ofspin-transfer torque in multilayered ferromagnetic media. Specifically,we use the techniques of Wigner transform and moment closure to connectthe underlying physics at different scales and reach a macroscopic model for thedynamics of spin coupled with the magnetization within the material. This providesa further understanding of the linear response model proposed byZhang, Levy, and Fert [Phys. Rev. Lett., 88 (2002), 236601], and in particular we get an extra relaxation term whichhelps to stabilize the system. We develop efficient numerical methodsto overcome the stiffness appearing in this new mean-field model and present severalexamples to analyze and show its validity. |
Year | DOI | Venue |
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2015 | 10.1137/140953149 | Periodicals |
Keywords | Field | DocType |
spin-transfer torque,spin-magnetization coupling,moment closure,magnetization reversal | Statistical physics,Ferromagnetism,Spin-½,Torque,Mathematical analysis,Moment closure,Magnetization,Mean field theory,Spin-transfer torque,Numerical analysis,Condensed matter physics,Physics | Journal |
Volume | Issue | ISSN |
13 | 2 | 1540-3459 |
Citations | PageRank | References |
0 | 0.34 | 2 |
Authors | ||
3 |
Name | Order | Citations | PageRank |
---|---|---|---|
jingrun chen | 1 | 0 | 1.35 |
Carlos J. García-Cervera | 2 | 6 | 2.07 |
Xu Yang | 3 | 45 | 9.17 |