Dynamics of two interacting dipoles

作者: D. Laroze , P. Vargas , C. Cortes , G. Gutierrez

DOI: 10.1016/J.JMMM.2007.12.010

关键词: Dissipative systemMagnetic fieldMagnetic dipole–dipole interactionCondensed matter physicsMagnetizationMagnetic anisotropyDipoleMagnetic momentPhysicsZeeman effect

摘要: Abstract We study the deterministic spin dynamic of two interacting magnetic moments with anisotropy and dipolar interaction under presence an applied field, by using Landau–Lifshitz equation without a damping term. Due to different kinds interactions, time scales appear: long scale associated short Zeeman interaction. found that total magnetization is not conserved; furthermore, for non-dissipative case it fluctuating function time, strong dependence on strength In dissipative there transient before reaches its constant value. examine this critical as distance between phenomenological coefficient, strongly depends these control parameters.

参考文章(10)
Philip E Wigen, Nonlinear phenomena and chaos in magnetic materials World Scientific. ,(1994) , 10.1142/1686
D. Laroze, P. Vargas, Dynamical behavior of two interacting magnetic nanoparticles Physica B: Condensed Matter. ,vol. 372, pp. 332- 336 ,(2006) , 10.1016/J.PHYSB.2005.10.079
SA Wolf, DD Awschalom, RA Buhrman, JM Daughton, von S von Molnár, ML Roukes, A Yu Chtchelkanova, DM Treger, Spintronics: A Spin-Based Electronics Vision for the Future Science. ,vol. 294, pp. 1488- 1495 ,(2001) , 10.1126/SCIENCE.1065389
Giorgio Bertotti, Claudio Serpico, Isaak D. Mayergoyz, Nonlinear magnetization dynamics under circularly polarized field. Physical Review Letters. ,vol. 86, pp. 724- 727 ,(2001) , 10.1103/PHYSREVLETT.86.724
G. Bertotti, I.D. Mayergoyz, C. Serpico, Perturbation technique for Landau–Lifshitz–Gilbert equation under elliptically polarized fields Physica B-condensed Matter. ,vol. 306, pp. 47- 51 ,(2001) , 10.1016/S0921-4526(01)00966-8
C. Serpico, I. D. Mayergoyz, G. Bertotti, Analytical solutions of Landau–Lifshitz equation for precessional switching Journal of Applied Physics. ,vol. 93, pp. 6909- 6911 ,(2003) , 10.1063/1.1557278
G. Bertotti, I.D. Mayergoyz, C. Serpico, Analytical solutions of Landau–Lifshitz equation for precessional dynamics Physica B-condensed Matter. ,vol. 343, pp. 325- 330 ,(2004) , 10.1016/J.PHYSB.2003.08.064
José Luis García-Palacios, Francisco J. Lázaro, Langevin-dynamics study of the dynamical properties of small magnetic particles Physical Review B. ,vol. 58, pp. 14937- 14958 ,(1998) , 10.1103/PHYSREVB.58.14937
Yoichiro Nambu, Generalized Hamiltonian dynamics Physical Review D. ,vol. 7, pp. 2405- 2412 ,(1973) , 10.1103/PHYSREVD.7.2405
Luis Fernández Álvarez, Oscar Pla, Oksana Chubykalo, Quasiperiodicity, bistability, and chaos in the Landau-Lifshitz equation Physical Review B. ,vol. 61, pp. 11613- 11617 ,(2000) , 10.1103/PHYSREVB.61.11613