关键词: 铁基超导体/
高温超导/
中子散射/
自旋激发
English Abstract
Antiferromagnetic order and spin dynamics in iron-based superconductors
Gong Dong-Liang1,2,Luo Hui-Qian1
1.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2.University of Chinese Academy of Sciences, Beijing 100049, China
Fund Project:Project supported by the National Natural Science Foundation of China (Grant No. 11374011), the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2016004), and the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB25000000).Received Date:16 August 2018
Accepted Date:11 September 2018
Published Online:20 October 2019
Abstract:Like the superconductivities in other unconventional superconductors, high-temperature superconductivity in the iron pnictide often emerges after the static antiferromagnetic order has been suppressed, and is always accompanied by strong spin fluctuations. Therefore, understanding the magnetism and its origin could be an important premise for ascertaining the microscopic mechanism of iron-based superconductivity. Neutron scattering, as a powerful tool for studying magnetic ordering and spin dynamics in condensed matters, plays an essential role in understanding the relationship between magnetism and superconductivity in iron-based superconductors. In this paper, we review the neutron scattering results for iron pnictides, including static magnetic structures, magnetic phase transitions, spin excitations and electronic nematicity, and discuss their relationship with superconductivity.
Keywords: iron-based superconductors/
high-temperature superconductivity/
neutron scattering/
spin excitation
