A comparative study of the electronic structure of the first row transition metal clusters

摘要

PHotoelectron spectra of several first row transition metal clusters, including Ti_n, V_n, Cr_n,Fe_n, and Co_n (n=4,6,7,13) are studied comparatively. it is observed that generally the electron affinity of the clusters increases for a given cluster size from Ti to Co. However, there are exceptions, most likely caused by cluster geometry variations. The Cr clusters exhibit dramatic size dependence both in terms of their electron affinity and their spectral features. These can be understood by their unusual dimer growth structures. The cluster structures are discussed on the similarity or variation of the spectral pattern for a give size. The comparative study is shown to be quite useful in elucidating the electronic and geometrical structures of the small transition metal clusters.