E-8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2V2O8 under Transverse Field
E-8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2V2O8 under Transverse Field
复制标题
E-8 准一维反铁磁体 BaCo2V2O8 横向场下的光谱
DOI：
10.1103/physrevlett.127.077201
复制
发表时间：
2021
影响因子：
8.6
通讯作者：
a
中科院分区：
文献类型：
--
作者：
Zou Haiyuan;Cui Yi;Wang Xiao;Zhang Z.;Yang J.;Xu G.;Okutani A.;Hagiwara M.;Matsuda M.;Wang G.;Mussardo Giuseppe;Hodsagi K.;Kormos M.;He Zhangzhen;Kimura S.;Yu Rong;Yu Weiqiang;Ma Jie;Wu Ji;a
本文报道了准一维反铁磁体在沿着[010]方向的横向场作用下的核磁共振和非弹性中子散射的测量结果。自旋-晶格弛豫速率在Néel温度以上的标度行为揭示了一个1D量子临界点（QCP），该临界点被3D磁序所掩盖。借助于精确的解析分析和数值计算，我们证明了带心惯性导航系统的谱可以用磁场中一维量子伊辛模型的模式精确描述，这是一类用例外李代数描述的普适性.当系统远离一维QCP时，这些激发在一定的场范围内是非扩散的。我们的研究结果提供了一个明确的实验实现的化合物的双相，并打开了一个新的实验路线，探索量子可积系统的动力学以及物理超越可积性。
We reportNMR and inelastic neutron scattering (INS) measurements on a quasi-1D antiferromagnetunder transverse field along the [010] direction. The scaling behavior of the spin-lattice relaxation rate above the Néel temperatures unveils a 1D quantum critical point (QCP) at, which is masked by the 3D magnetic order. With the aid of accurate analytical analysis and numerical calculations, we show that the zone center INS spectrum atis precisely described by the pattern of the 1D quantum Ising model in a magnetic field, a class of universality described in terms of the exceptionalLie algebra. These excitations are nondiffusive over a certain field range when the system is away from the 1D QCP. Our results provide an unambiguous experimental realization of the massivephase in the compound, and open a new experimental route for exploring the dynamics of quantum integrable systems as well as physics beyond integrability.