In recent years, transient electric field is becoming a means for the generation of hidden states or phase transitions. In this study, the spatial-temporal distribution of picosecond surface electric fields, associated with the femtosecond-laser-induced charge emission from ${\mathrm{La}}_{0.67}{\mathrm{Sr}}_{0.33}{\mathrm{MnO}}_3$ (LSMO) single-crystal films, were interrogated by subpicosecond electron pulses and reconstructed by a three-layer theoretical model. A strong picosecond surface electric field, on the order of 100 kV/m, was generated on LSMO films. Such self-induced transient electric fields may be a promising means for controlling ultrafast processes in materials.

中文翻译：

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La0.67Sr0.33MnO3薄膜的光子感应电荷发射产生的皮秒表面电场的演变

近年来，瞬态电场正在成为一种产生隐藏状态或相变的手段。在这项研究中，皮秒表面电场的时空分布与飞秒激光诱导的电荷发射有关${啦}_{0.67}{r}_{0.33}{\mathrm{二氧化锰}}_3$（LSMO）单晶膜通过亚皮秒电子脉冲进行询问，并通过三层理论模型进行重建。在LSMO薄膜上产生了大约100 kV / m的强大皮秒表面电场。这种自感应的瞬态电场可能是控制材料中超快过程的有前途的手段。