Critical spin fluctuations and the origin of nematic order in Ba(Fe1-xCox)2As2
Critical spin fluctuations and the origin of nematic order in Ba(Fe1-xCox)2As2
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DOI：
10.1038/nphys3634
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发表时间：
2016-06-01
期刊：
影响因子：
19.6
通讯作者：
Hackl, R.
中科院分区：
文献类型：
--
作者：
Kretzschmar, F.;Boehm, T.;Hackl, R.
向列涨落和有序在铜酸盐（1）、某些铼酸盐（2）或铁基化合物（3-6）等材料类别中起着重要作用，并可能与超导性（7-11）相关。在铁基化合物（12）中，在各种实验中观察到了向列性的特征。然而，有关自旋（13）、电荷（9，14）或轨道（8，15，16）涨落的相关性的基本问题仍然没有解决。本文利用非弹性光（拉曼）散射研究了Ba（Fe 1-xCox）（2）As-2（0
Nematic fluctuations and order play a prominent role in material classes such as the cuprates(1), some ruthenates(2) or the iron-based compounds(3-6) and may be interrelated with superconductivity(7-11). In iron-based compounds(12) signatures of nematicity have been observed in a variety of experiments. However, the fundamental question as to the relevance of the related spin(13), charge(9,14) or orbital(8,15,16) fluctuations remains open. Here, we use inelastic light (Raman) scattering and study Ba(Fe1-xCox)(2)As-2 (0