科研之友
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摘要
The full potential linear augmented plane wave method is used to study the relaxation and electronic structure of (001) surface for α-U. The current work predicts a contraction of the topmost layer by 2.9% accompanied by an outward expansion of the second and third layers by 1.1% and 0.2%, respectively. The relaxation of topmost and second layers makes up the largest contribution of relaxation energy. Due to the short-range screening effect, the atomic interaction is mainly limited to adjacent layers. For the surface atoms, due to the reduced nearest neighbors, the contribution to the bonding from 5f electrons is reduced and 5f electrons appear to be more localized.
- 出版日期2005-4
