Open AccessJoint density of electronic states for one isolated single-wall carbon nanotube studied by resonant Raman scattering
Author(s) -
Ado Jório,
A. G. Souza Filho,
G. Dresselhaus,
M. S. Dresselhaus,
Riichiro Saito,
Jason H. Hafner,
Charles M. Lieber,
F. M. Matinaga,
M. S. S. Dantas,
M. A. Pimenta
Publication year - 2001
Publication title -
physical review. b, condensed matter
Language(s) - English
Resource type - Journals
eISSN - 1095-3795
pISSN - 0163-1829
DOI - 10.1103/physrevb.63.245416
Subject(s) - mesoscopic physics , carbon nanotube , materials science , raman spectroscopy , raman scattering , density of states , atomic physics , scattering , laser , molecular physics , condensed matter physics , physics , nanotechnology , optics
Departamento de Fi´sica, Universidade Federal de Minas Gerais, Belo Horizonte - MG, 30123-970 Brazil~Received 21 December 2000; published 6 June 2001!Resonant Raman scattering ~RRS! measurements made with a tunable laser provide a highly reliable tech-nique to study the shape of the joint density of electronic states ~JDOS! of isolated single-wall carbon nano-tubes ~SWNTs!. RRS can be used to determine the energy value for the one-dimensional ~1D! van Hovesingularities of a SWNT with a precision better than 5 meV, thereby providing important information thatcould be used for subsequent measurements on this same SWNT. With RRS, the measured width of the JDOSis on the order of ;0.121.0 meV, further demonstrating that SWNTs really provide a remarkably good modelfor 1D mesoscopic systems.DOI: 10.1103/PhysRevB.63.245416 PACS number~s!: 78.30.Na, 78.66.Tr
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