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Cu3Te2O5(OH)4: A Frustrated Two-Dimensional Quantum “Magnetic Raft” as a Possible Pathway to a Spin Liquid

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Title
Cu3Te2O5(OH)4: A Frustrated Two-Dimensional Quantum “Magnetic Raft” as a Possible Pathway to a Spin Liquid
Author(s)
Zhu, Tianyu; Zhu, Bei; Mentré, Olivier; Suheon Lee; Chen, Dan; Jin, Yanling; Zhu, Wenxuan; Arévalo-López, A.M.; Minaud, Claire; Choi, Kwang-Yong; Lü, Kwang-Yong
Publication Date
2023-05
Journal
Chemistry of Materials, v.35, no.10, pp.3951 - 3959
Publisher
American Chemical Society
Abstract
We report a combined experimental and theoretical study of the hitherto unknown compound Cu3Te2O5(OH)4 that comprises an original network of ferromagnetic (FM; J1 = −100 K with strong next-nearest neighbor exchanges JNNN = 50 K) chains and alternating antiferromagnetic (AFM; J2 ∼ 148 K, and J2′ ∼ 125 K) chains arranged in a so-called S = 1/2 two-dimensional “magnetic raft” spin-lattice. The two one-dimensional spin sublattices are interconnected by weaker exchanges (Jd ∼ 40 K), which create tetrahedral Cu4 knots between the cross-linked “raft” legs, bringing about strong magnetic frustration. The magnetic susceptibility and specific heat show the absence of magnetic ordering down to 1.8 K hampered by fully frustrated Cu1 spins. High-field magnetization reveals a one-third magnetization plateau that is stable up to 33 T, which conveys the fingerprint of the individual AFM and FM chains. Magnetic entropy shows a two-stage Schottky-like release, implying the thermal decoupling of magnetic sublattices. Our work establishes that Cu3Te2O5(OH)4 can serve as a prominent platform for discovering sought-after quantum spin liquids in chemistry and physics. © 2023 American Chemical Society.
URI
https://pr.ibs.re.kr/handle/8788114/13564
DOI
10.1021/acs.chemmater.3c00177
ISSN
0897-4756
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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