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Identifier

uch.physics.phd//1999komineas

Title

Dynamics of topological magnetic solitons

Alternative Title

Δυναμική τοπολογικών μαγνητικών σολιτονιών

Author

Κομηνέας, Σταύρος

Thesis advisor

Παπανικολάου, Νικόλαος

Abstract

We study the dynamics of topological magnetic solitons in ferromagnets (FM) and antiferromagnets (AFM). A realistic magnetic bubble is numerically calculated in a FM film. Then its dynamics is studied, particularly the skew deflection in an external field gradient. For the AFM we give a detailed derivation of the nonlinear σ-model known to describe the AFM continuum. Then we study the dynamics of one or a pair of vortices. Two vortices are found to scatter at right angles, but the presence of a uniform external magnetic field affects the dynamics profoundly. As isolated vortex is pinned, while relevant motion is possible only in the presence of other vortices. Finally a topological change relevant to the dynamics is given.

Language

English

Issue date

1999-01-01

Date available

1999-07-29

Collection

School/Department--School of Sciences and Engineering--Department of Physics--Doctoral theses

Type of Work--Doctoral theses

Permanent Link

https://elocus.lib.uoc.gr//dlib/0/f/d/metadata-dlib-1999komineas.tkl