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One-ninth magnetization plateau stabilized by spin entanglement in a kagome antiferromagnet

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Title
One-ninth magnetization plateau stabilized by spin entanglement in a kagome antiferromagnet
Author(s)
Jeon, Sungmin; Dirk Wulferding; Choi, Youngsu; Lee, Seungyeol; Nam, Kiwan; Kim, Kee Hoon; Lee, Minseong; Jang, Tae-Hwan; Park, Jae-Hoon; Suheon Lee; Sungkyun Choi; Lee, Chanhyeon; Nojiri, Hiroyuki; Choi, Kwang-Yong
Publication Date
2024-03
Journal
Nature Physics, v.20, pp.435 - 441
Publisher
Nature Publishing Group
Abstract
The spin-1/2 antiferromagnetic Heisenberg model on a kagome lattice is geometrically frustrated, which is expected to promote the formation of many-body quantum entangled states. The most sought-after among these is the quantum spin-liquid phase, but magnetic analogues of liquid, solid and supersolid phases may also occur, producing fractional plateaus in the magnetization. Here, we investigate the experimental realization of these predicted phases in the kagome material YCu3(OD)6+xBr3−x (x ≈ 0.5). By combining thermodynamic and Raman spectroscopic techniques, we provide evidence for fractionalized spinon excitations and observe the emergence of a 1/9 magnetization plateau. These observations establish YCu3(OD)6+xBr3−x as a model material for exploring the 1/9 plateau phase. © 2024, The Author(s), under exclusive licence to Springer Nature Limited.
URI
https://pr.ibs.re.kr/handle/8788114/14916
DOI
10.1038/s41567-023-02318-7
ISSN
1745-2473
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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