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arXiv physics/0305031physics.atom-phphysics.acc-phphysics.chem-ph
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负氢离子在金属表面共振电荷转移中的平行约束证据

Evidence for parallel confinement in resonant charge transfer of negative hydrogen ion near metal surfaces

Himadri S. Chakraborty, Thomas Niederhausen, Uwe thumm

摘要:

利用波包传播方法,我们发现H^-在Cu(111)表面附近的共振电荷转移过程受到瞬态杂化态的强烈影响。这些状态源自平行于表面的离子诱导的约束,以及金属电势沿表面法线的表面局部化特性。在典型的粒子表面散射实验中,这些状态的最低成员具有相互作用时间的顺序的寿命。电子概率密度的传播为这种效应提供了明确的证据,使这些瞬态的演化和衰减可视化。

英文摘要:

Using a wave packet propagation approach, we find that the resonant charge transfer process of H^- near a Cu(111) surface is strongly influenced by transient hybrid states. These states originate from an ion-induced confinement parallel to the surface together with the surface-localization character of the metal potential along the surface normal. The lowest members of these states have lifetimes of the order of interaction times in typical particle-surface scattering experiments. The propagation of the electron probability density provides clear evidence for this effect in visualizing the evolution and the decay of these transient states.

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