Second-Order Resonant Raman Spectra of Single-walled Carbon Nanotubes

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Log Number: 45 Abstract Submitted to the

Second-Order Resonant Raman Spectra of Single-walled Carbon Nanotubes

M.S. Dresselhaus and G. Dresselhaus

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, U.S.A.
Contact e-mail: millie@mgm.mit.edu

An analysis of the second-order resonant Raman spectra of single-walled carbon nanotubes using different laser energies in the range 1.58-2.71 eV is presented. Major emphasis is given to the overtones and combination modes associated with the two dominant features of the first-order spectra, the radial breathing mode and the tangential mode. Both of these modes, as well as their second-order counterparts, are associated with resonant enhancement phenomena arising from electron-phonon coupling to the unique one-dimensional density of electronic states for the single-wall carbon nanotubes.

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