Highly extended image states around nanotubes -: art. no. 135506

被引：73

作者：

Granger, BE ^{[1
]}

Král, P

Sadeghpour, HR

Shapiro, M

机构：

[1] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA

[2] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.89.135506

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We predict that freely suspended, linear molecular conductors or dielectrics, such as carbon nanotubes, can support electronic states that are localized far from the surface. These "tubular image states" are formed in extended potential wells resulting from the tug of war between the external electron's attraction to its image charge in the nanotube, and its repulsion from the tube due to its transverse angular momentum. The displacement of these states (>10 nm) away from the surface prevents their wave functions from collapsing, resulting in long lifetimes at low temperatures. We predict that tubular image states with binding energies of 1-10 meV can be formed via radiative recombination.

引用

页码：1355061 / 1355064

页数：4

共 38 条

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