Electronic Raman scattering and the Fano resonance in metallic carbon nanotubes

• Main Authors: Hasdeo, Eddwi H. (Author), Nugraha, Ahmad R. T. (Author), Sato, Kentaro (Author), Dresselhaus, Mildred (Contributor), Saito, Riichiro (Author)
• Other Authors: Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science (Contributor), Massachusetts Institute of Technology. Department of Physics (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2014-08-13T13:01:53Z.
• Subjects: Article
• Online Access: Get fulltext

The Fano resonance spectra for the G band in metallic carbon nanotubes are calculated as a function of laser excitation energy, in which the origin of the resonance is given by an interference between the continuous electronic Raman spectra and the discrete phonon spectra. We found that the second-order scattering process of the q ≠ 0 electron-electron interaction is more relevant to the continuous spectra rather than the q = 0 first-order process because the q = 0 direct Coulomb interaction vanishes due to the symmetry of the two sublattices of a carbon nanotube.
National Science Foundation (U.S.). Division of Materials Research (Grant 10-04147)