The surprisingly short vibrational lifetime of the internal stretch of CO adsorbed on Si(100).
The surprisingly short vibrational lifetime of the internal stretch of CO adsorbed on Si(100).
复制标题
吸附在 Si(100) 上的 CO 内部拉伸的振动寿命惊人地短。
DOI：
10.1063/1.1993550
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
E. Hasselbrink
中科院分区：
文献类型：
--
作者：
K. Lass;Xu Han;E. Hasselbrink
皮秒和频发生光谱已被用来研究吸附在 Si(100) 表面上的 CO 的内部伸缩振动的动力学。使用IR泵浦和频率产生探针方法，C-O伸缩振动的振动寿命被确定为2.3+/-0.5 ns。在实验误差限度内，观察到 12C16O 和 13C16O 具有相同的寿命。根据使用不同掺杂晶体的测量推断，没有观察到对衬底中载流子密度的强烈依赖性。
Picosecond sum-frequency generation spectroscopy has been employed to study the dynamics of the internal stretch vibration of CO adsorbed on a Si(100) surface. Using the IR pump-sum-frequency generation probe method, the vibrational lifetime of the C-O stretch vibration has been determined to be 2.3+/-0.5 ns. Within the experimental error limits, the identical lifetime was observed for 12C16O and 13C16O. No strong dependency on the carrier density in the substrate, inferred from measurements using differently doped crystals, was observed.