Ag（111）表面单个银团簇和银链的非晶态
Unoccupied states of individual silver clusters and chains on Ag(111)
摘要：
利用扫描隧道显微镜在Ag（111）表面制备了具有尺寸选择性的银团簇。超导铜电子共振引起的图像对比度和光谱的特点，向费米能级的增加集群的大小。线性组件比同等尺寸的紧凑组件具有更高的共振能量。密度泛函理论计算再现了观测到的能量，并使分配的共振杂化原子5s和5p轨道与银基板状态。
英文摘要：
Size-selected silver clusters on Ag(111) were fabricated with the tip of a scanning tunneling microscope. Unoccupied electron resonances give rise to image contrast and spectral features which shift toward the Fermi level with increasing cluster size. Linear assemblies exhibit higher resonance energies than equally sized compact assemblies. Density functional theory calculations reproduce the observed energies and enable an assignment of the resonances to hybridized atomic 5s and 5p orbitals with silver substrate states.
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