Abstract
Transient (in time) uniformly precessing magnetization structures (TUPS) on finite-length ferromagnetic wires are discussed. These rotating around the wire magnetization solutions of the Landau-Lifshits-Slonczewski equation are generalizations of traveling uniformly precessing domain walls of infinite range described by Goussev et al. [Phys. Rev. Lett. 104, 147202 (2010)] and comprise a single parameter family of magnetization profiles controlled by the precession frequency. The latter slowly varies in time resulting in passage of the magnetization structure through different evolution stages. The modulational stability of the TUPS is also discussed. An autoresonance approach using chirped frequency transverse spin polarized current is applied to initiate TUPS with a desired precession frequency. The process of complete inversion of the magnetization of the wire involving passage from spatially uniform to nonuniform and then back to uniform precessing state with opposite magnetization is analyzed.
Published Version
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