Field-induced quantum spin disordered state in spin-1/2 honeycomb magnet Na(2)Co(2)TeO(6).
Field-induced quantum spin disordered state in spin-1/2 honeycomb magnet Na(2)Co(2)TeO(6).
复制标题
自旋 1/2 蜂窝磁体 Na2Co2TeO6 中场致量子自旋无序态
DOI：
10.1038/s41467-021-25567-7
复制
发表时间：
2021-09-21
影响因子：
16.6
通讯作者：
Ma J
中科院分区：
文献类型：
--
作者：
Lin G;Jeong J;Kim C;Wang Y;Huang Q;Masuda T;Asai S;Itoh S;Günther G;Russina M;Lu Z;Sheng J;Wang L;Wang J;Wang G;Ren Q;Xi C;Tong W;Ling L;Liu Z;Wu L;Mei J;Qu Z;Zhou H;Wang X;Park JG;Wan Y;Ma J
具有Kitaev相互作用的自旋-轨道耦合蜂窝磁体由于具有承载奇异量子态（包括量子自旋液体）的潜力而受到了广泛的关注。到目前为止，研究最多的Kitaev系统是基于4d/5d的蜂窝磁铁。最近的理论研究预测，包括Na 2Co 2 TeO 6（NCTO）在内的3D蜂窝磁体也可能是一种潜在的Kitaev系统。本文采用热容、磁化强度、电子自旋共振测量和非弹性中子散射（INS）相结合的方法研究了NCTO的量子磁性，发现在7.5 T <B（B轴）< 10.5 T的磁场范围内存在场致自旋无序态。还模拟了INS光谱，以尝试性地提取交换相互作用。作为一种在有效自旋为1/2的蜂窝晶格上具有场诱导无序态的3d磁体，NCTO将Kitaev模型扩展到3d化合物，促进了对量子磁体中自旋轨道效应的进一步研究.
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 3dcompounds, promoting further interests on the spin-orbital effect in quantum magnets.
登录
查看更多内容
影响因子：
5.7
作者：
Banerjee, Arnab;Lampen-Kelley, Paula;Nagler, Stephen E.
通讯作者：
Nagler, Stephen E.
影响因子：
16.6
作者：
Kimchi I;Sheckelton JP;McQueen TM;Lee PA
通讯作者：
Lee PA
影响因子：
8.6
作者：
Baek, S-H.;Do, S-H.;Buechner, B.
通讯作者：
Buechner, B.
蜂窝状 Na2IrO3 中磁相互作用的第一性原理研究
影响因子：
3.7
作者：
Hou, Y. S.;Yang, J. H.;Gong, X. G.
通讯作者：
Gong, X. G.
影响因子：
3
作者：
Kitaev, A
通讯作者：
Kitaev, A