Conductance of bulk samples of multiwall carbon nanotubes-metal junctions

Conductance as a function of voltage and temperature was measured in junctions made of bulk samples of multiwall carbon nanotubes and metal electrodes. A clear zero bias anomaly was observed at low temperatures. The experimental results were analyzed within existing models based on Luttinger liquid and disorder theories. We find that our results are well explained using the quasi-one-dimensional disordered model.