Investigations of electronic structure of capped carbon nanotubes by scanning tunneling spectroscopy

被引：12

作者：

Klusek, Z

Kowalczyk, P

Byszewski, P

机构：

[1] Northumbria Univ, Adv Mat Res Inst, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

[2] Univ Lodz, Dept Solid State Phys, PL-90236 Lodz, Poland

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[4] Inst Vacuum Technol, PL-00241 Warsaw, Poland

来源：

VACUUM | 2001年 / 63卷 / 1-2期

关键词：

scanning tunneling microscopy; scanning tunneling spectroscopy; carbon nanotube; carbon nanotube cap; localized surface state;

D O I：

10.1016/S0042-207X(01)00183-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Scanning tunneling microscopy and spectroscopy have been used to observe the variations of electronic structure along capped carbon nanotubes deposited on freshly cleaved HOPG(0001) surface. The electronic structure has been derived from measured dependence of tunneling conductance dI/dV with applied voltage. Evolution of dI/dV(V) along the nanotube suggests a change of conductivity from semiconducting to metallic as the cap is approaching. The experiments are discussed in terms of existing theories of nanotubes and quantum chemistry calculations. (C) 2001 Elsevier Science Ltd. All rights reserved.

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收藏

页码：145 / 150

页数：6

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