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Inhomogeneous States in a Small Magnetic Disk with Single-Ion Surface Anisotropy

V. E. Kireev·B. A. Ivanov
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Abstract

We investigate analytically and numerically the ground and metastable states for easy-plane Heisenberg magnets with single-ion surface anisotropy and disk geometry. The configurations with two half-vortices at the opposite points of the border are shown to be preferable for strong anisotropy. We propose a simple analytical description of the spin configurations for all values of a surface anisotropy. The effects of lattice pinning leads to appearance of a set of metastable configurations.

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V. E. Kireev, B. A. Ivanov. 2003-06-24. Inhomogeneous States in a Small Magnetic Disk with Single-Ion Surface Anisotropy. https://doi.org/10.1103/physrevb.68.104428

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