中性和离子金属团簇的高能光电离
Energetic photoionization of neutral and ionic metal clusters
摘要：
我们表明，与Na_92的一个例子，对于jeltamycin金属团簇的快电子波从集群边缘上的等效网站发出的干扰产生单色振荡的光电子动量的函数在所有的光电离观测值，效果相当于通常的色散现象。在处理形式主义，一个严重的后果，自我相互作用校正的局部密度泛函理论在正确占交换相互作用的不足被确定。本文还简要讨论了Na_（58）等离子体系列中N=58的中性成员和N=52的离子成员（其中N为价电子数）对光谱的影响。最后，对这些结果对其他离域电子量子系统可能产生的影响作了一些评论。
英文摘要：
We show, with an example of Na_92, that for jellium metal clusters the interference of fast electron-waves emitted from equivalent sites on the cluster edge produces monochromatic oscillations in all photoionization observables as a function of the photoelectron momentum; the effect is equivalent to the usual dispersion phenomenon. In dealing with formalisms, a serious consequence of the inadequacy of self-interaction corrected local density-functional theory in correctly accounting for the exchange interaction is identified. We also briefly discuss the influence of the ionicity of the residual core on photospectra by considering the neutral member with N=58 and and the ionic member with N=52 of the Na_58 iso-jellium series, where N is the number of valence electrons. A few final remarks on possible implications of these results on other quantum systems of delocalized electrons are made.
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