Multiple-Q instability under fourth-order inplane single-ion anisotropy

Hayami, Satoru

Multiple-Q instability under fourth-order inplane single-ion anisotropy

Hayami, Satoru

Journal of magnetism and magnetic materials, 2023, 570, 170507

Permalink : https://hdl.handle.net/2115/94311

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論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/94311
タイトル	Multiple-Q instability under fourth-order inplane single-ion anisotropy
著者	著者名 Hayami, Satoru
言語	英語
キーワード	Multiple-Q magnetic state
	Single-ion anisotropy
	Square lattice
	Noncoplanar spin texture
	Magnetic frustration
発行日	2023-03-15
出版者	Elsevier
収録物名	Journal of magnetism and magnetic materials
巻(号)	570
ページ	170507
抄録	Multiple-Q instability under tetragonal single-ion anisotropy is theoretically investigated. By performing the simulated annealing for a spin model with the momentum-resolved interaction and fourth-order inplane single -ion anisotropy on a square lattice, we find that the interplay between the competing exchange interactions in momentum space and single-ion anisotropy leads to various field-induced double-Q states in the ground state. In particular, we show that a double-Q vortex crystal emerges when the interactions at high-harmonic wave vectors are comparable to those at wave vectors that give the dominant contributions. Our results underscore the importance of magnetic anisotropy, which brings about the multiple-Q instability in centrosymmetric magnets.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2023 This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0304-8853
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.jmmm.2023.170507