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Field-induced quantum spin disordered state in spin-1/2 honeycomb magnet Na(2)Co(2)TeO(6)

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...

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Detalles Bibliográficos
Autores principales: Lin, Gaoting, Jeong, Jaehong, 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
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8455656/
https://www.ncbi.nlm.nih.gov/pubmed/34548484
http://dx.doi.org/10.1038/s41467-021-25567-7
Descripción
Sumario: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 Na(2)Co(2)TeO(6) (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.