Clusters as models of bulk surfaces and novel materials
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Studies on gas phase clusters show that common ground exists between clusters and bulk surfaces such that clusters can serve as models of bulk surfaces. Several cluster systems are studied to probe this cluster-surface analogy with both ultraviolet photoelectron spectroscopy (UPS) and Fourier transform ion cyclotron resonance (FT-ICR). Ultraviolet photoelectron spectra of GaAs cluster anions are measured with a photon energy of 7.9 eV. The electron affinity displays a strong even/odd oscillation suggesting the presence of a substantial gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) in the corresponding neutral clusters. The absence of unpaired electrons in even numbered neutral clusters is reminiscent of the healed dangling bonds caused by the reconstruction and relaxation at GaAs bulk surfaces.
Chemical reactions of noble and transition metal clusters with CO and H
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Jin, Changming. "Clusters as models of bulk surfaces and novel materials." (1992) Diss., Rice University. https://hdl.handle.net/1911/16578.