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  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 5
• Pages: 941-943

Dates

published

2009-05

received

2008-05-24

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Identifiers

DOI

10.12693/APhysPolA.115.941