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arXiv · 1601.02064

Bubble and Skyrmion Crystals in Frustrated Magnets with Easy-Axis Anisotropy

Satoru Hayami·Shi-Zeng Lin·Cristian D. Batista
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Abstract

We clarify the conditions for the emergence of multiple-${\bf Q}$ structures out of lattice and easy-axis spin anisotropy in frustrated magnets. By considering magnets whose exchange interaction has multiple global minima in momentum space, we find that both types of anisotropy stabilize triple-${\bf Q}$ orderings. Moderate anisotropy leads to a magnetic field-induced skyrmion crystal, which evolves into a bubble crystal for increasing spatial or spin anisotropy. The bubble crystal exhibits a quasi-continuous (devil's staircase) temperature dependent ordering wave-vector, characteristic of the competition between frustrated exchange and strong easy-axis anisotropy.

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Satoru Hayami, Shi-Zeng Lin, Cristian D. Batista. 2016-05-12. Bubble and Skyrmion Crystals in Frustrated Magnets with Easy-Axis Anisotropy. https://doi.org/10.1103/physrevb.93.184413

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