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Journal Article

Channeling of charge carrier plasmons in carbon nanotubes


Rubio,  Angel
Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Departamento de F´ısica de Materiales, Universidad del Pa´ıs Vasco, Centro de F´ısica de Materiales CSIC-UPV/EHU-MPC and DIPC;
Theory, Fritz Haber Institute, Max Planck Society;

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Kramberger, C., Roth, F., Schuster, R., Kraus, R., Knupfer, M., Einarrson, E., et al. (2012). Channeling of charge carrier plasmons in carbon nanotubes. PHYSICAL REVIEW B, 85: 085424. doi:10.1103/PhysRevB.85.085424.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-76EA-3
Ab initio calculations of the loss function of potassium-intercalated and electron-loaded bundles of single-walled carbon nanotubes yield a channeled-charge-carrier plasmon without perpendicular dispersion. Experimentally, we probe the momentum-dependent loss function of thin bundles consisting of only a few potassium-intercalated single-walled carbon nanotubes by angle-resolved electron-energy-loss spectroscopy and confirm this intrinsic channeling. The charge-carrier-plasmon energy is via in situ intercalation and is tunable in the near-visible infrared-energy range from 0.85 to 1.15 eV.