FeKpre-edges as revealed by resonant x-ray emission
FeKpre-edges as revealed by resonant x-ray emission
复制标题
共振 X 射线发射显示 FeK 前边缘
DOI：
10.1103/physrevb.69.235107
复制
发表时间：
2004
影响因子：
3.7
通讯作者：
F. Farges
中科院分区：
文献类型：
--
作者：
J. Rueff;L. Journel;P. Petit;F. Farges
通过共振 X 射线发射光谱 (RXES) 研究了模型 Fe 化合物中 Fe 吸收边缘的前边缘结构。我们证明，当在精细能量网格上测量时，可以以非常简单的方式从 RXES 光谱中导出前边缘分解为其各个组件，这导致前边缘区域的“二维映射”。由于谐振过程的锐化效应，可以以比芯孔寿命更好的分辨率观察特征。最后，通过 RXES 特征的分散，我们表明前边缘主要由到主要局部状态的转换主导。我们相信 RXES 是一种揭示复杂系统中过渡金属原子电子特性的技术，特别是在受限的样品环境中。
The pre-edge structures at the Feabsorption edge in model Fe compounds are investigated by resonant x-ray emission spectroscopy (RXES). We demonstrate that decomposition of the pre-edge into its various components can be derived in a very straightforward way from RXES spectra when measured on a fine energy grid, which leads to “two-dimensional mapping” of the pre-edge region. Thanks to the sharpening effect of the resonant process, features can be observed with resolution better than thecore-hole lifetime. Finally, through dispersion of the RXES features, we show that the pre-edge is dominated by transitions to mainly localized states. We believe that RXES constitutes a technique of choice by which to unveil the electronic properties of transition metal atoms in complex systems, particularly in constrained sample environments.