Anisotropic magnetic excitations from single-chirality antiferromagnetic state in Ca-kapellasite

Ihara, Y.; Yoshida, H.; Arashima, K.; Hirata, M.; Sasaki, T.

Anisotropic magnetic excitations from single-chirality antiferromagnetic state in Ca-kapellasite

Ihara, Y.; Yoshida, H.; Arashima, K. et al.

Physical Review Research, 2020, 2(2), 023269

Permalink : https://hdl.handle.net/2115/80419

このアイテムのアクセス数:580件（2026-08-24 16:08 集計）

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https://doi.org/10.1103/PhysRevResearch.2.023269			28

論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/80419
タイトル	Anisotropic magnetic excitations from single-chirality antiferromagnetic state in Ca-kapellasite
著者	Ihara, Y. ; Yoshida, H. ; Arashima, K. ; Hirata, M. ; Sasaki, T.
e-Rad_Researcher 80598491 著者名 Ihara, Y.
著者名 Yoshida, H.
著者名 Arashima, K.
著者名 Hirata, M.
著者名 Sasaki, T.
言語	英語
発行日	2020-06-02
出版者	American Physical Society (APS)
収録物名	Physical Review Research
巻(号)	2(2)
ページ	023269
抄録	We present a Cl-35 NMR study for the spin S = 1/2 perfect kagome antiferromagnet Ca-kapellasite [CaCu3(OH)(6)Cl-2 center dot 0.6H(2)O] with a magnetic transition at T* = 7.2 K. The static magnetic structure in the ground state has been determined to be a chirality-ordered Q = 0 state, which is selected by a finite Dzyaloshinskii-Moriya interaction. The low-energy magnetic excitations in the ordered state are investigated by a nuclear spin-lattice relaxation rate measurement. We detect a weakly temperature-dependent contribution in the magnetic fluctuations perpendicular to the kagome plane in addition to the dispersive spin-wave contribution in the kagome plane. The low-energy magnetic excitations from the coplanar spin structure are attributed to the zero mode originating from the flat band in this kagome antiferromagnet.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevResearch.2.023269