Shell structure and shapes of fermion microsystems: A comparative study of 3He and Na clusters

Yannouleas, Constantine; Landman, Uzi
November 1996
Journal of Chemical Physics;11/15/1996, Vol. 105 Issue 19, p8734
Academic Journal
A semiempirical shell-correction method including ellipsoidal deformations is used to determine binding energies of open-shell, unpolarized 3HeN clusters. Shell effects, shapes, and other ground-state properties (like the chemical potential) are determined. 3HeN clusters are found to be substantially less deformed due to their relatively high surface energy as compared to that of alkali-metal clusters (e.g., sodium clusters). As a result, the size-evolutionary patterns associated with 3HeN clusters are significantly different than the corresponding ones for NaN clusters. In particular, odd–even oscillations and signatures of subshell closures are absent in the case of 3HeN clusters, while they are prominent in the case of alkali-metal clusters. © 1996 American Institute of Physics.


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