Tunneling into multiwalled carbon nanotubes: coulomb blockade and the Fano resonance.
Tunneling spectroscopy measurements of single tunnel junctions formed between multiwalled carbon nanotubes (MWNTs) and a normal metal are reported. Intrinsic Coulomb interactions in the MWNTs give rise to a strong zero-bias suppression of a tunneling density of states that can be fitted numerically to the environmental quantum-fluctuation theory. An asymmetric conductance anomaly near zero bias is found at low temperatures and interpreted as Fano resonance in the strong tunneling regime.
Yi
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Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China.
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Hu
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Pan
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Xie
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