Static and Dynamics of Topological Defects in Magnetic Dots

• Authors: J. Lévy
• Languages of publication: EN

Abstracts

EN

A Taylor expansion of dipole-dipole interaction in 2D systems defines a Landau-like local dipolar interaction in spin derivative field. The lowest order of this interaction gives the dipolar anisotropy. The next non-zero order is responsible for the appearance of magnetic vortices and hyperbolic defects. The following non-zero orders indicate the occurrence of higher topological defects such as double circle and of modulations. The arrangement of self-screened topological defects is discussed in agreement with the Monte Carlo simulations and experimental observations. Excited localized modes associated with these defects are classified.

Keywords

EN

75.60.Ch; 75.75.+a

Discipline

• 75.60.Ch: Domain walls and domain structure(for magnetic bubbles and vortices, see 75.70.Kw)

• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 5
• Pages: 941-943

Dates

published

2009-05

received

2008-05-24

Contributors

author

J. Lévy

• Laboratoire Matériaux et Phénomènes Quantiques, CNRS UMR 7162,Université Paris 7-Denis Diderot, 10 rue Alice Domont et Léonie Duquet, 75013 Paris, France

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Identifiers

DOI

10.12693/APhysPolA.115.941