Micro-Raman investigation of aligned single-wall carbon nanotubes

被引：40

作者：

Fantini, C

Pimenta, MA

Dantas, MSS

Ugarte, D

Rao, AM

Jorio, A

Dresselhaus, G

Dresselhaus, MS

机构：

[1] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil

[2] Lab Nacl Luz Sincrotron, BR-13083970 Campinas, SP, Brazil

[3] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA

[4] MIT, Dept Phys, Cambridge, MA 02139 USA

[5] MIT, Francis Bitter Natl Magnet Lab, Cambridge, MA 02139 USA

[6] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.63.161405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polarized micro-Raman experiments were performed on samples of aligned single-wall carbon nanotubes (SWNTs) previously characterized by scanning electron microscopy. The analysis of the different spectral shapes of the tangential G band, when the position of the laser beam changes from spot to spot on the sample, allows us to distinguish the contribution from metallic and semiconducting nanotubes. The angular dependence of the polarized spectra reveals that the line around similar to 1580 cm(-1) is an intrinsic feature of metallic SWNTs. Moreover, it is shown that the "antenna" effect for the Raman scattering in SWNTs is stronger for metallic than for semiconducting nanotubes.

引用

页数：4