Image potential for a double-walled cylindrical nanotube

被引：18

作者：

Gumbs, G ^{[1
]}

Balassis, A ^{[1
]}

Fekete, P ^{[1
]}

机构：

[1] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10021 USA

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.73.075411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We calculate the image potential between the walls of a double-walled cylindrical nanotube which is assumed to be infinitely long. In this model, each tubule is infinitesimally thin and is embedded in a background dielectric medium. Interactions between electrons confined to move on the surface of each tubule are taken into account via the random-phase approximation. We demonstrate that the effective potential for an orbiting charge depends on its angular momentum as well as the separation between the tubules. We calculate the plasmon frequencies and their phase velocities as functions of the wave vector parallel to the axes of the tubules. The range for the drift velocity for current-driven plasma instabilities is discussed.

引用

页数：7

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