Electronic effects in scanning tunnelling microscopy of metal-filled multiwalled carbon nanotubes

Details Electronic effects in scanning tunnelling microscopy of metal-filled multiwalled carbon nanotubes Electronic effects in scanning tunnelling microscopy of metal-filled multiwalled carbon nanotubes

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004njph....6...31c&link_type=abstract

New Journal of Physics, Volume 6, Issue 1, pp. 31 (2004).

Physics

Scientific paper

We have used ultrahigh-vacuum scanning tunnelling microscopy to investigate the effects of Fe filling on the electronic structure of multiwalled carbon nanotubes (MWNTs). When imaged using constant current feedback, Fe-filled MWNTs exhibit striking contrast corrugations that strongly correlate to expected positions (from transmission electron microscopy) of the Fe fillings along the nanotubes. Furthermore, the corrugation in contrast corresponds to significant variations in local electronic structure as determined by tunnelling spectroscopy. These results suggest that inner cores of Fe-filled carbon nanotubes can exhibit considerable influence on the electronics of the outer shells of even large MWNTs.

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