Title :
Nonlinear Landau-Lifshitz dynamics for circularly and elliptically polarized applied magnetic fields
Author :
Serpico, Claudio ; Mayergoyz, Isaak ; Bertotti, Giorgio
Author_Institution :
Dept. of Electr. Eng., Naples Univ., Italy
fDate :
7/1/2001 12:00:00 AM
Abstract :
The magnetization dynamics described by the Landau-Lifshitz equation is studied. In the case of circularly polarized applied magnetic field, the equation may have periodic and quasiperiodic solutions while chaotic dynamics is precluded. The qualitative change in the magnetization dynamics is examined when the polarization of a transverse harmonic magnetic field is gradually changed from circular to linear. Various nonlinear phenomena such as quasiperiodic behavior, symmetry breaking bifurcations and chaotic motions are observed
Keywords :
bifurcation; chaos; magnetisation; spin dynamics; Landau-Lifshitz equation; chaotic dynamics; circular polarization; elliptic polarization; magnetic field; nonlinear magnetization dynamics; quasiperiodic dynamics; symmetry breaking bifurcation; Anisotropic magnetoresistance; Bifurcation; Chaos; Frequency; Magnetic anisotropy; Magnetic fields; Magnetization; Nonlinear equations; Perpendicular magnetic anisotropy; Polarization;
Journal_Title :
Magnetics, IEEE Transactions on
