Supershell structure in alkali metal nanowires

被引：74

作者：

Yanson, AI

Yanson, IK

van Ruitenbeek, JM

机构：

[1] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands

[2] Natl Acad Sci, Inst Low Temp Phys & Engn, UA-310164 Kharkov, Ukraine

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.84.5832

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nanowires are formed by indenting and subsequently retracting two pieces of sodium metal. Their cross section gradually reduces upon retraction and the diametres can be obtained from the conductance. In previous work we have demonstrated that when one constructs a histogram of diameters from large numbers of indentation-retraction cycles such histograms show a periodic pattern of stable nanowire diameters due to shell structure in the conductance modes. Here, we report the observation of a modulation of this periodic pattern, in agreement with predictions of a supershell structure.

引用

收藏

页码：5832 / 5835

页数：4

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