arxiv: cond-mat/0512667 · v3 · pith:6IYICGU2new · submitted 2005-12-27 · ❄️ cond-mat.mtrl-sci

Study of charge dynamics in transparent single-walled carbon nanotube films

F. Borondics (1) , K. Kamaras (1) , M. Nikolou (2) , D. B. Tanner (2) , Z. H. Chen (2) , A. G. Rinzler (2) ((1) Research Institute for Solid State Physics , Optics , Budapest

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Hungary (2) Department of Physics University of Florida Gainesville FL U.S.A.)

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keywords infraredcarbonfilmsnanotubeanalysisbelowcausescharge

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We report the transmission over a wide frequency range (far infrared - visible) of pristine and hole-doped, free-standing carbon nanotube films at temperatures between 50 K and 300 K. Optical constants are estimated by Kramers-Kronig analysis of transmittance. We see evidence in the far infrared for a gap below 10 meV. Hole doping causes a shift of spectral weight from the first interband transition into the far infrared. Temperature dependence in both the doped and undoped samples is restricted to the far-infrared region.

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Study of charge dynamics in transparent single-walled carbon nanotube films

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