Volume 100, Number 2, October 2012
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||01 November 2012|
Magnetic vortices induced by a moving tip
1 Faculty of Physics and CeNIDE, University of Duisburg-Essen - D-47048 Duisburg, Germany, EU
2 Universität Würzburg, Fakultät für Physik und Astronomie - D-97074 Würzburg, Germany, EU
3 Instituto de Fisica, Universidade Federal do Rio Grande do Sul - 91501-970 Porto Alegre, RS, Brazil
Received: 13 July 2012
Accepted: 4 October 2012
A two-dimensional easy-plane ferromagnetic substrate, interacting with a dipolar tip which is magnetised perpendicular with respect to the easy plane is studied numerically by solving the Landau-Lifshitz Gilbert equation. Due to the symmetry of the dipolar field of the tip, in addition to the collinear structure a magnetic vortex structure becomes stable. It is robust against excitations caused by the motion of the tip. We show that for high excitations the system may perform a transition between the two states. The influence of domain walls, which may also induce this transition, is examined.
PACS: 75.70.Kw – Domain structure (including magnetic bubbles and vortices) / 75.78.Fg – Dynamics of domain structures / 75.10.Hk – Classical spin models
© EPLA, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.