Hemispheroidal atomic clusters on planar surfaces

被引：4

作者：

Gherghescu, R. A. ^{[1
,2
]}

Poenaru, D. N. ^{[1
]}

Solovyov, A. ^{[1
]}

Greiner, W. ^{[1
]}

机构：

[1] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany

[2] Horia Hulubei Natl Inst Phys & Nucl Engn NIPNE, Dept Theoret Phys, Bucharest, Romania

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2010年 / 42卷 / 05期

关键词：

Deposited clusters; Inert surfaces; Shell model; Shell corrections; SHELL STRUCTURE; METAL-CLUSTERS;

D O I：

10.1016/j.physe.2009.12.044

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The surface influence on deposited atomic clusters is accounted for as a change in the geometry of the free cluster from spheroidal to semispheroidal (oblate and prolate) shapes. The energy levels for the electrons are calculated using a deformed oscillator quantum well plus squared angular momentum half-cut by an infinite wall located at the surface. The level scheme is used to compute the shell corrections, to which a macroscopic liquid drop energy is added. Clear minima of the total deformation energy are obtained for semispheroids at the same deformation, within a range of atom number from 2 to 100. These minima are interpreted as stable structures of various magic numbers for deposited atomic clusters. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1555 / 1562

页数：8

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