Quantum conductance steps in solutions of multiwalled carbon nanotubes
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URI: http://arxiv.org/abs/cond-mat/0305261URI: http://hdl.handle.net/10317/582
ISSN: 1079-7114
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We wish to acknowledge Professor John Schrag for supplying Aroclor 1254, and for helpful discussions and suggestions. This work has been partially supported by Fundación Séneca under Grant No.PI-60-00858-FS-01.Publication date
2003Publisher
American Physical SocietyBibliographic Citation
URBINA, A., ECHEVARRÍA, I., PÉREZ GARRIDO, A., DÍAZ SÁNCHEZ, A., ABELLÁN, J.Quantum conductance steps in solutions of multiwalled carbon nanotubes. Physical Review Letters, 90 (10): 106603-1 - 106603-4, 2003. ISSN 1079-7114Keywords
Nanotubos de carbónElectrónica molecular
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Abstract
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 G0 = 2e2/h, demonstrating ballistic transport at room temperature along the carbon nanotube over distances longer than 1.4μm.
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