Chaos Appearance during Domain Wall Motion under Electronic Transfer in Nanomagnets

Donfack Gildas Hermann, Jean-Pierre Nguenang

Fundamental Physics’ Laboratory, Group of Nonlinear Physics and Complex System, Department of Physics, Faculty of Science University of Douala, Douala, Cameroon.

DOI: 10.4236/wjcmp.2013.33022                

Abstract

In this paper, we study the likelihood of chaos appearance during domain wall motion induced by electronic transfer. Considering a time-varying current density theory, we proceed to a numerical investigation of the dynamics. Using the dissipation parameter, amplitude and frequency of current density as control parameters; we show how periodic regime as well as chaotic regime can be exhibited in nanomagnetic systems. Numerical results allow setting up the periodicity and quasi-periodicity of system and chaotic phenomena occurring during magnetization switching process in nanomagnet through electronic transfer.

Keywords

Domain Wall Motion; Magnetization Dynamics; Chaos Appearance

Conflicts of Interest

The authors declare no conflicts of interest.

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