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Mass spectrometric and first principles study of AlnC- clusters

Jijun Zhao, Bingchen Liu, Huajin Zhai, Rufang Zhou, Guoquan Ni, Zhizhan Xu

physics.atm-clusarXiv:physics/0112054

Abstract

We study the carbon-dope aluminum clusters by using time-of-flight mass spectrum experiments and ab initio calculations. Mass abundance distributions are obtained for anionic aluminum and aluminum-carbon mixed clusters. Besides the well-known magic aluminum clusters such as Al13- and Al23-, Al7C- cluster is found to be particularly stable among those AlnC- clusters. Density functional calculations are performed to determine the ground state structures of AlnC- clusters. Our results show that the Al7C- is a magic cluster with extremely high stability, which might serve as building block of the cluster-assembled materials.

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