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文章回顾了用中子散射技术对铁基超导体中所存在的三维长程反铁磁序进行研究的进展.大多数铁基超导体母体的晶体结构在温度降低时都经历了从四方相变化到正交相或单斜相的结构相变.在此相变温度之下,自旋系统也从顺磁变化到三维长程反铁磁.在掺杂之后,结构相变和磁相变都被压制,而超导则最终出现.文章详细介绍了各种母体中的三维反铁磁结构及其自旋波频谱,并讨论了掺杂对反铁磁相变和晶格相变的影响.
The progress in the study of three-dimensional long-range antiferromagnetic iron-based superconductors using neutron scattering has been reviewed.Most iron-based superconductor precursors undergo a phase transition from tetragonal to orthorhombic Phase or monoclinic phase, the spin system also changes from paramagnetic to three-dimensional long-range antiferromagnetic at the phase transition temperature.After doping, the structural and magnetic phase transitions are suppressed, and Superconductivity finally emerges.The three-dimensional antiferromagnetic structure and its spin wave spectrum in various precursors are introduced in detail, and the influence of doping on the antiferromagnetic phase transition and the lattice phase transition is discussed.