当前位置:
X-MOL 学术
›
Phys. Rev. B
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Spin excitations and quantum criticality in the quasi-one-dimensional Ising-like ferromagnetCoCl2·2D2Oin a transverse field
Physical Review B ( IF 3.2 ) Pub Date : 2017-11-20 00:00:00 , DOI: 10.1103/physrevb.96.174424 J. Larsen , T. K. Schäffer , U. B. Hansen , S. L. Holm , S. R. Ahl , R. Toft-Petersen , J. Taylor , G. Ehlers , J. Jensen , H. M. Rønnow , K. Lefmann , N. B. Christensen
Physical Review B ( IF 3.2 ) Pub Date : 2017-11-20 00:00:00 , DOI: 10.1103/physrevb.96.174424 J. Larsen , T. K. Schäffer , U. B. Hansen , S. L. Holm , S. R. Ahl , R. Toft-Petersen , J. Taylor , G. Ehlers , J. Jensen , H. M. Rønnow , K. Lefmann , N. B. Christensen
We present experimental evidence for a quantum phase transition in the easy-axis anisotropic quasi-one-dimensional ferromagnet in a transverse field. Elastic neutron scattering shows that the magnetic order parameter vanishes at a transverse critical field (4) T, while inelastic neutron scattering shows that the gap in the magnetic excitation spectrum vanishes at the same field value, and reopens for . The field dependence of the order parameter and the gap are well described by critical exponents and close to , implying that the quantum phase transition in differs significantly from the textbook version of a Ising chain in a transverse field. We attribute the difference to weak but finite three-dimensionality of the magnetic interactions.
中文翻译:
横向场中准一维Ising型铁磁体CoCl2·2D2O的自旋激发和量子临界
我们提供了易轴上量子相变的实验证据 各向异性准一维铁磁体 在横向领域。弹性中子散射表明,磁阶参数在横向临界场处消失(4)T,而非弹性中子散射表明,在相同的场值下,磁激发光谱中的间隙消失了,并且对于 。关键参数很好地描述了阶数参数和间隙的场相关性 和 相近 ,暗示量子相变在 与教科书版本的 伊辛链在横向领域。我们将差异归因于磁性相互作用的弱但有限的三维性。
更新日期:2017-11-20
中文翻译:
横向场中准一维Ising型铁磁体CoCl2·2D2O的自旋激发和量子临界
我们提供了易轴上量子相变的实验证据 各向异性准一维铁磁体 在横向领域。弹性中子散射表明,磁阶参数在横向临界场处消失(4)T,而非弹性中子散射表明,在相同的场值下,磁激发光谱中的间隙消失了,并且对于 。关键参数很好地描述了阶数参数和间隙的场相关性 和 相近 ,暗示量子相变在 与教科书版本的 伊辛链在横向领域。我们将差异归因于磁性相互作用的弱但有限的三维性。