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arXiv · 2109.14222

Phase shift, ellipticity, angle, and topological number in skyrmion lattices

Kotaro Shimizu·Shun Okumura·Yasuyuki Kato·Yukitoshi Motome
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Abstract

We theoretically study skyrmion lattices realized in a Kondo lattice model on a triangular lattice, focusing on the phase, ellipticity, and angle of the constituent multiple-$Q$ waves. Analyzing the numerical data obtained in the previous study [Ozawa R, Hayami S and Motome Y 2017 Phys. Rev. Lett. 118 147205], we extract these parameters for the two types of skyrmion lattices with the skyrmion number of $1$ and $2$. We show that the topological transition between the two skyrmion lattices driven by an external magnetic field is accompanied by significant modulations of all three parameters.

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Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, Yukitoshi Motome. 2021-09-29. Phase shift, ellipticity, angle, and topological number in skyrmion lattices. https://doi.org/10.1088/1742-6596%2F2164%2F1%2F012069

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