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

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3081

Lastpage

3083

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 quasi-periodic 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 quasi-periodic behavior, symmetry breaking bifurcations and chaotic motions are observed

Keywords

magnetisation; spin dynamics; applied magnetic fields; chaotic motions; circularly polarized field; elliptically polarized fields; magnetization dynamics; nonlinear Landau-Lifshitz dynamics; periodic solutions; quasi-periodic solutions; symmetry breaking bifurcations; transverse harmonic magnetic field; Anisotropic magnetoresistance; Bifurcation; Chaos; Magnetic anisotropy; Magnetic fields; Magnetic resonance; Magnetization; Nonlinear equations; Perpendicular magnetic anisotropy; Polarization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908687

Filename

908687