Hess C, Wolf M, Bonn M
Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
Phys Rev Lett. 2000 Nov 13;85(20):4341-4. doi: 10.1103/PhysRevLett.85.4341.
We report the experimental observation of the gradual transition from a local oscillator to a two-dimensional delocalized phonon, observed for the CO-stretch vibration of carbon monoxide adsorbed on a Ru(001) surface by means of broadband-infrared saturation sum-frequency spectroscopy. The data are theoretically reproduced by an exchange model with residence times of the excitation down to 2.5 ps.
我们报告了通过宽带红外饱和和频光谱法，对吸附在Ru(001)表面的一氧化碳的CO伸缩振动所观察到的，从局域振子到二维离域声子的逐渐转变的实验观测结果。这些数据通过一个激发停留时间低至2.5皮秒的交换模型进行了理论再现。
