Short-Period Skyrmion Crystals in Itinerant Body-Centered Tetragonal Magnets
In this study, we investigate the stability of a magnetic skyrmion crystal with short-period magnetic modulations in a centrosymmetric body-centered tetragonal system. By performing the simulated annealing for the spin model, incorporating the effects of the biquadratic interaction and high-harmonic...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-10-01
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| Series: | Magnetochemistry |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2312-7481/10/10/78 |
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| Summary: | In this study, we investigate the stability of a magnetic skyrmion crystal with short-period magnetic modulations in a centrosymmetric body-centered tetragonal system. By performing the simulated annealing for the spin model, incorporating the effects of the biquadratic interaction and high-harmonic wave–vector interaction in momentum space, we find that the double-<i>Q</i> square skyrmion crystal consisting of two spin density waves is stabilized in an external magnetic field. We also show that double-<i>Q</i> states appear in both low- and high-field regions; the low-field spin configuration is characterized by an anisotropic double-<i>Q</i> modulation consisting of a superposition of the spiral wave and sinusoidal wave, while the high-field spin configuration is characterized by an isotropic double-<i>Q</i> modulation consisting of a superposition of two sinusoidal waves. Furthermore, we show that the obtained multiple-<i>Q</i> instabilities can be realized for various ordering wave vectors. The results provide the possibility of realizing the short-period skyrmion crystals under the body-centered tetragonal lattice structure. |
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| ISSN: | 2312-7481 |