Quantum Conductance Steps in Solutions of Multiwalled Carbon Nanotubes

Details Quantum Conductance Steps in Solutions of Multiwalled Carbon Nanotubes Quantum Conductance Steps in Solutions of Multiwalled Carbon Nanotubes

2003-05-12

arxiv.org/abs/cond-mat/0305261v1

Physical Review Letters 90, 106603 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages and 2 figures

Scientific paper

10.1103/PhysRevLett.90.106603

We have prepared solutions of multiwalled carbon nanotubes in Aroclor 1254, a mixture of polychlorinated biphenyls. The solutions are stable at room temperature. Transport measurements were performed using a scanning--tunneling probe on a sample prepared by spin--coating of the solution on gold substrates. Conductance steps were clearly seen. An histogram of a high number of traces shows maximum peaks at integer values of the conductance quantum $G_0 = 2e^2/h$, demonstrating ballistic transport at room temperature along the carbon nanotube over distances longer than $1.4\mu m$.

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