作者: Hemantkumar N. Aiyer , V. Vijayakrishnan , G.N. Subbanna , C.N.R. Rao
DOI: 10.1016/0039-6028(94)90059-0
关键词:
摘要: Palladium clusters deposited on carbon substrates by vacuum evaporation have been examined high resolution electron microscopy and scanning tunneling to obtain the size distributions of clusters. Pd(3d) binding energy known measured establish variation with cluster size. Clusters a mean diameter $\sim$ 1 nm which show highest PdOd) energies relative bulk metal also conductance gap in spectroscopic measurements. The results occurrence size-dependent metal-to-nonmetal transition Pd This conclusion is corroborated valence band bremsstrahlung isochromat measurements emergence new states closer $E_F$ an increase