Diameter dependence of the Raman D-band in isolated single-wall carbon nanotubes -: art. no. 041401

被引：114

作者：

Pimenta, MA

Jorio, A

Brown, SDM

Souza, AG

Dresselhaus, G

Hafner, JH

Lieber, CM

Saito, R

Dresselhaus, MS

机构：

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

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

[3] Univ Fed Ceara, Dept Fis, BR-60455760 Fortaleza, Ceara, Brazil

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

[5] Harvard Univ, Dept Chem, Cambridge, MA 02138 USA

[6] Univ Electrocommun, Dept Elect Engn, Chofu, Tokyo 1828585, Japan

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

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.64.041401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Raman D-band spectra are reported for several different SWNTs using two different laser energies (E-laser = 1.58 and 2.41 eV). At a fixed E-laser individual isolated SWNTs exhibit different diameter-dependent D-band frequencies omega (D) around an average value. For both semiconducting and metallic tubes, omega (D) decreases with decreasing nanotube diameter, though omega (D) for isolated metallic SWNTs is higher than for isolated semiconducting SWNTs. The average D-band frequency depends linearly on E-laser as previously observed for SWNT bundles, suggesting that the D-band in SWNTs is activated by defects or by the finite size of the SWNTs.

引用

页数：4

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