Time-resolved resonant soft x-ray diffraction with free-electron lasers: Femtosecond dynamics across the Verwey transition in magnetite
Time-resolved resonant soft x-ray diffraction with free-electron lasers: Femtosecond dynamics across the Verwey transition in magnetite
复制标题
DOI：
10.1063/1.3584855
复制
发表时间：
2011-05-02
影响因子：
4
通讯作者：
Duerr, H. A.
中科院分区：
文献类型：
--
作者：
Pontius, N.;Kachel, T.;Duerr, H. A.
共振软X射线衍射（RSXD）具有飞秒（fs）时间分辨率，是研究强关联电子材料中不同自由度之间相互作用的有力工具。它允许在外部选择性扰动时解决特定自由度的耦合，例如。例如，在一个实施例中，通过光学或红外激光脉冲。在这里，我们报告了一个时间分辨RSXD实验从原型相关电子材料磁铁矿使用软X射线脉冲从自由电子激光闪光在汉堡。我们观察到超快熔化的电荷轨道顺序导致形成的瞬态相，这还没有观察到在平衡。(C)2011年美国物理学会。[doi：10.1063/1.3584855]
Resonant soft x-ray diffraction (RSXD) with femtosecond (fs) time resolution is a powerful tool for disentangling the interplay between different degrees of freedom in strongly correlated electron materials. It allows addressing the coupling of particular degrees of freedom upon an external selective perturbation, e. g., by an optical or infrared laser pulse. Here, we report a time-resolved RSXD experiment from the prototypical correlated electron material magnetite using soft x-ray pulses from the free-electron laser FLASH in Hamburg. We observe ultrafast melting of the charge-orbital order leading to the formation of a transient phase, which has not been observed in equilibrium. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3584855]