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Probing the phonon dispersion relations of graphite from the double-resonance process of Stokes and anti-Stokes Raman scatterings in multiwalled carbon nanotubes
Tan, PH; An, L; Liu, LQ; Guo, ZX; Czerw, R; Carroll, DL; Ajayan, PM; Zhang, N; Guo, HL
2002-12-15
Source PublicationPHYSICAL REVIEW B
ISSN1098-0121
Volume66Issue:24
AbstractThe Stokes and anti-Stokes Raman spectra of a multiwalled carbon nanotube (MWNT) sample are studied here by four excitation energies and the observed Raman modes are assigned based on the double resonance Raman effect and the previous results in graphite whiskers. There exists frequency discrepancy between Stokes and anti-Stokes lines (FDSA) of many Raman modes in MWNT's and the discrepancy values are strongly dependent on the excitation energy, in which the FDSA value of the D' mode even changes from a positive value (9 cm(-1), 1.58 eV) to a negative value (-11 cm(-1), 2.54 eV). The laser-energy dependence of the FDSA values of some modes in MWNT's is attributed to the nonlinear frequency dependence of Stokes and anti-Stokes Raman lines of these modes on the excitation energy. Raman results and the theoretical analysis of the intravalley and intervalley double resonance processes of Stokes and anti-Stokes Raman scatterings both show that the frequency of an anti-Stokes peak excited by epsilon(L) is equal to that of the corresponding Stokes peak excited by a laser excitation of epsilon(L)+(h) over bar omega(S) where (h) over bar omega(S) is the phonon energy of the Raman mode. Stokes and anti-Stokes double-resonance Raman scatterings have been used to probe the phonon dispersion relations of graphite. The Raman data of the well-known disorder-induced D mode are in good agreement with the theoretical results.
DOI10.1103/PhysRevB.66.245410
Indexed BySCI
Language英语
WOS IDWOS:000180319200069
PublisherAMERICAN PHYSICAL SOC
Citation statistics
Cited Times:96[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78600
Collection中国科学院化学研究所
Corresponding AuthorTan, PH
Affiliation1.Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany
2.Natl Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Chem, Beijing 110015, Peoples R China
4.Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA
5.Rensselaer Polytech Inst, Dept Mat Sci & Engn, Troy, NY USA
6.Res Inst Petr Explorat & Dev, Lab Ctr, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Tan, PH,An, L,Liu, LQ,et al. Probing the phonon dispersion relations of graphite from the double-resonance process of Stokes and anti-Stokes Raman scatterings in multiwalled carbon nanotubes[J]. PHYSICAL REVIEW B,2002,66(24).
APA Tan, PH.,An, L.,Liu, LQ.,Guo, ZX.,Czerw, R.,...&Guo, HL.(2002).Probing the phonon dispersion relations of graphite from the double-resonance process of Stokes and anti-Stokes Raman scatterings in multiwalled carbon nanotubes.PHYSICAL REVIEW B,66(24).
MLA Tan, PH,et al."Probing the phonon dispersion relations of graphite from the double-resonance process of Stokes and anti-Stokes Raman scatterings in multiwalled carbon nanotubes".PHYSICAL REVIEW B 66.24(2002).
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