Assignment of chiral vectors in carbon nanotubes -: art. no. 235404

被引：58

作者：

Kramberger, C

Pfeiffer, R

Kuzmany, H

Zólyomi, V

Kürti, J

机构：

[1] Univ Vienna, Inst Mat Phys, A-1090 Vienna, Austria

[2] Eotvos Lorand Univ, Dept Biol Phys, H-1117 Budapest, Hungary

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.68.235404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Double-wall carbon nanotubes were derived from peapods by annealing at high temperature. We report on the Raman response of the radial breathing mode (RBM) of the inner tubes. As a consequence of their small diameter the Raman spectra of these tubes show well distinguishable lines, besides the usual broad response from the outer tubes. An algorithm was developed to find the best (n,m) assignment for the observed lines. As a result of the assignment, we received nu(RBM)=233/d+14, nu(RBM) in cm(-1) for the nu versus 1/d relation, where d is the tube diameter in nm. To bring the discrepancy between calculation of RBM frequencies and experiment to a minimum, the diameters were evaluated from density functional theory.

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