Second-order Raman spectra of single and multiwalled carbon nanotubes

被引：63

作者：

Thomsen, C ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.61.4542

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

From second-order Raman scattering we find that the maximum in the phonon density of states of single-walled nanotubes softens by 30 cm(-1) over the value of graphite. A comparison of the phonon-dispersion curves of nanotubes in the literature shows that the ab initio approach best describes this softening. The excitation-energy dependence of the D and D* modes in single-walled nanotubes is 38 and 90 cm(-1)/eV, respectively, similar to the multiwalled species.

引用

页码：4542 / 4544

页数：3

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