Perspective: Structural dynamics in condensed matter mapped by femtosecond x-ray diffraction
Perspective: Structural dynamics in condensed matter mapped by femtosecond x-ray diffraction
复制标题
DOI：
10.1063/1.4855115
复制
发表时间：
2014-01-14
影响因子：
4.4
通讯作者：
Woerner, M.
中科院分区：
文献类型：
--
作者：
Elsaesser, T.;Woerner, M.
超短软、硬x射线脉冲在皮米长度和飞秒时间尺度上是结构动力学的灵敏探针。最近在产生这种脉冲方面的进展开辟了凝聚态研究的新方向，利用各种x射线吸收、散射和衍射方法来探测光致结构动力学。原子运动、局部结构和长程序的变化以及相关的电子运动和电荷转移在空间和时间上得到了解决，为了解驱动可逆和不可逆结构变化的物理机制和相互作用提供了最直接的途径。这个观点结合了飞秒x射线衍射的最新进展概述和对正在进行和未来发展的讨论。(C) 2014作者。
Ultrashort soft and hard x-ray pulses are sensitive probes of structural dynamics on the picometer length and femtosecond time scales of electronic and atomic motions. Recent progress in generating such pulses has initiated new directions of condensed matter research, exploiting a variety of x-ray absorption, scattering, and diffraction methods to probe photoinduced structural dynamics. Atomic motion, changes of local structure and long-range order, as well as correlated electron motion and charge transfer have been resolved in space and time, providing a most direct access to the physical mechanisms and interactions driving reversible and irreversible changes of structure. This perspective combines an overview of recent advances in femtosecond x-ray diffraction with a discussion on ongoing and future developments. (C) 2014 Author(s).