Abstract
A large enough piece of ferromagnet is usually not magnetized uniformly, but develops a magnetization texture. In thin films these textures can be doubly-periodic. Such are the well known magnetic bubble domains and the recently observed “skyrmion” magnetization textures in MnSi. In this paper we develop a theory of periodic magnetization textures, based on complex calculus to answer the question – is there a difference between those two textures even if they seem to carry the same topological winding number (or topological charge)? We find that such difference exists, facilitated by a different role played by the magnetization vector’s in-plane phase. We separate classical-like and quantum-like features of magnetization textures and highlight the role of magnetic anisotropy in favouring either of these cases.
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