Spin fluctuations in iron pnictides and chalcogenides: From antiferromagnetism to superconductivity

被引:77
作者
Inosov, Dmytro S. [1 ]
机构
[1] Tech Univ Dresden, Inst Festkorperphys, D-01069 Dresden, Germany
关键词
Superconductivity; Iron pnictides; Spin fluctuations; Inelastic neutron scattering; HIGH-TEMPERATURE SUPERCONDUCTIVITY; DOPING-INDUCED SUPERCONDUCTIVITY; NEUTRON-SCATTERING; PHASE-SEPARATION; PAIRING SYMMETRY; MAGNETIC ORDER; T-C; NEMATIC ORDER; EXCITATIONS; STATE;
D O I
10.1016/j.crhy.2015.03.001
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The present article reviews recent experimental investigations of spin dynamics in iron based superconductors and their parent compounds by means of inelastic neutron scattering. It mainly focuses on the most contemporary developments in this field, pertaining to the observations of magnetic resonant modes in new superconductors, spin anisotropy of low-energy magnetic fluctuations that has now been observed in a wide range of chemical compositions and doping levels, as well as their momentum-space anisotropy incurred by the spin-nematic order. The implications of these new findings for our understanding of the superconducting state, along with the remaining unsettled challenges for neutron spectroscopy, are discussed. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
引用
收藏
页码:60 / 89
页数:30
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