Femtosecond-Time-Resolved Surface Structural Dynamics of Optically Excited Silicon
Femtosecond-Time-Resolved Surface Structural Dynamics of Optically Excited Silicon
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DOI：
10.1103/physrevlett.51.900
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发表时间：
1983-09
影响因子：
8.6
通讯作者：
C. Shank;R. Yen;C. Hirlimann
中科院分区：
文献类型：
--
作者：
C. Shank;R. Yen;C. Hirlimann
用90-fs的时间分辨率观察了用强光脉冲激发后在硅表面上发生的结构变化的动力学。三重旋转对称性的硅111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
The dynamics of the structural changes that take place on a silicon surface following excitation with an intense optical pulse are observed with 90-fs time resolution. The threefold rotational symmetry of the silicon $〈111〉$ surface becomes rotationally isotropic within a picosecond after excitation consistent with a transition from the crystalline to the liquid molten state.