Vortex energies in the two-dimensional easy-plane ferromagnet

In the core region of a planar vortex in the two-dimensional Heisenberg model, the continuum approximation breaks down and a cut-off radius must be introduced as the lower limit of the energy integral. By expressing the total vortex energy as the sum of discrete core and continuum contributions it i...

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Bibliographic Details
Published in:	Journal of magnetism and magnetic materials Vol. 162; no. 1; pp. 91 - 94
Main Authors:	Zaspel, C.E., Godinez, D.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-09-1996
Subjects:	Classical xy model Magnetic vortices Two-dimensional magnetism Two-dimensional magnetism Magnetic vortices Classical xy model
Online Access:	Get full text
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Summary:	In the core region of a planar vortex in the two-dimensional Heisenberg model, the continuum approximation breaks down and a cut-off radius must be introduced as the lower limit of the energy integral. By expressing the total vortex energy as the sum of discrete core and continuum contributions it is possible to determine this cut-off radius as well as an accurate estimate of the vortex energy.
ISSN:	0304-8853
DOI:	10.1016/0304-8853(96)00080-7