Detecting the direction of oxygen bonding in SrTiO3
Detecting the direction of oxygen bonding in SrTiO3
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检测 SrTiO3 中氧键的方向
DOI：
10.1103/physrevb.88.115120
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发表时间：
2013
影响因子：
3.7
通讯作者：
and L. J. Allen
中科院分区：
文献类型：
--
作者：
M. J. Neish;N. R. Lugg;S. D. Findlay;M. Haruta;K. Kimoto;and L. J. Allen
在电子能量损失谱中，电离边的近边缘精细结构提供了成键和元素信息。我们研究了SrTiOOEDGE的精细结构，其中氧原子在三维上具有相同的局域成键环境，但在二维投影上不同。通过去除实验数据中的弹性散射和热扩散散射的影响，我们证明了投影不相等的O柱之间的微小差异，这种差异在探测电子的散射消除之前并不明显。探讨了该方法对各种实验参数不确定性的稳健性。
The near-edge fine structure of an ionization edge in electron energy-loss spectroscopy provides bonding and elemental information. We investigate the fine structure of the Oedge in SrTiO, where the oxygen atoms have identical local bonding environments in three dimensions but differ in their two-dimensional projection. By removing the effects of elastic and thermal diffuse scattering in experimental data, we demonstrate a small difference between the O columns that are nonequivalent in projection, which was not evident before the removal of scattering of the probing electrons. We explore the robustness of this method to the uncertainty in various experimental parameters.