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Field-induced quantum spin disordered state in spin-1/2 honeycomb magnet Na2Co2TeO6

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Title
Field-induced quantum spin disordered state in spin-1/2 honeycomb magnet Na2Co2TeO6
Author(s)
Lin, Gaoting; Jaehong Jeong; Kim, Chaebin; Wang, Yao; Huang, Qing; Masuda, Takatsugu; Asai, Shinichiro; Itoh, Shinichi; Günther, Gerrit; Russina, Margarita; Lu, Zhilun; Sheng, Jieming; Wang, Le; Wang, Jiucai; Wang, Guohua; Ren, Qingyong; Xi, Chuanying; Tong, Wei; Ling, Langsheng; Liu, Zhengxin; Wu, Liusuo; Mei, Jiawei; Qu, Zhe; Zhou, Haidong; Wang, Xiaoqun; Park, Je-Geun; Wan, Yuan; Ma, Jie
Publication Date
2021-12-01
Journal
Nature Communications, v.12, no.1
Publisher
Nature Research
Abstract
© 2021, The Author(s).Spin-orbit coupled honeycomb magnets with the Kitaev interaction have received a lot of attention due to their potential of hosting exotic quantum states including quantum spin liquids. Thus far, the most studied Kitaev systems are 4d/5d-based honeycomb magnets. Recent theoretical studies predicted that 3d-based honeycomb magnets, including Na2Co2TeO6 (NCTO), could also be a potential Kitaev system. Here, we have used a combination of heat capacity, magnetization, electron spin resonance measurements alongside inelastic neutron scattering (INS) to study NCTO’s quantum magnetism, and we have found a field-induced spin disordered state in an applied magnetic field range of 7.5 T < B (⊥ b-axis) < 10.5 T. The INS spectra were also simulated to tentatively extract the exchange interactions. As a 3d-magnet with a field-induced disordered state on an effective spin-1/2 honeycomb lattice, NCTO expands the Kitaev model to 3d compounds, promoting further interests on the spin-orbital effect in quantum magnets.
URI
https://pr.ibs.re.kr/handle/8788114/10358
DOI
10.1038/s41467-021-25567-7
ISSN
2041-1723
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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