STAR ORBITS IN METAL-CLUSTERS

被引：16

作者：

MANSIKKAAHO, J ^{[1
]}

MANNINEN, M ^{[1
]}

NISHIOKA, H ^{[1
]}

机构：

[1] KONAN UNIV, DEPT PHYS, KOBE 658, JAPAN

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.48.1837

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A possibility that classical five-point star orbits play a dominant role for shell structures of large metal clusters is investigated quantum mechanically. With a soft Woods-Saxon spherical potential a signature of the five-point star orbit is found in the level densities. Quantum numbers of degenerate levels in the soft Woods-Saxon potential differ by 2 and 5 in radial nodes and angular momenta, respectively. Unlike the experimental observation the peaks in the mass spectrum are not equally spaced as a function of N1/3. The self-consistent jellium model does not reproduce the degeneracy associated with the five-point star orbits. It is demonstrated thal by covering high-density metal clusters with a layer of a low-density metal the potential can be made softer.

引用

页码：1837 / 1843

页数：7

共 22 条

[1] DISTRIBUTION OF EIGENFREQUENCIES FOR WAVE-EQUATION IN A FINITE DOMAIN .3. EIGENFREQUENCY DENSITY OSCILLATIONS [J].