论文标题
光激发的亚电势结构wo $ _ {3} $由泵 - 探针扩展X射线吸收精细的结构光谱和受约束的彻底搜索分析
Metastable structure of photoexcited WO$_{3}$ determined by the pump--probe extended X-ray absorption fine structure spectroscopy and constrained thorough search analysis
论文作者
论文摘要
我们已经确定了脉冲泵400 nm激光照射后创建了150 ps的光激发亚电势WO $ _3 $的局部结构 - 探针l $ _3 $ _3 $ - 边缘扩展X射线吸收良好的结构光谱和约束的彻底搜索分析。我们发现，高度扭曲的八面体局部结构，其中最短的W = O键将进一步缩短为1.66Å，而其他五个键也被延长，尽管理论计算预测了相反的变化。我们讨论了这一矛盾，并提出了亚稳态的可能结构。
We have determined the local structure of photoexcited metastable WO$_3$ created 150 ps after 400 nm laser irradiation by the pulse pump--probe L$_3$-edge extended X-ray absorption fine structure spectroscopy and the constrained thorough search analysis. We have found a highly distorted octahedral local structure with one of the shortest W=O bonds being further shortened to 1.66 Åwhile the other five bonds were elongated even though theoretical calculations predicted the reverse change. We discuss this contradiction and propose a possible structure for the metastable state.
