%0 Journal Article %A Urbina Yeregui, Antonio %A Echevarría, I. %A Pérez Garrido, Antonio %A Díaz Sánchez, Anastasio %A Abellán García, Francisco Javier %T Quantum conductance steps in solutions of multiwalled carbon nanotubes %D 2003 %@ 1079-7114 %U http://arxiv.org/abs/cond-mat/0305261 %U http://hdl.handle.net/10317/582 %X 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. %K Física Aplicada %K Nanotubos de carbón %K Electrónica molecular %K Sustrato de oro %~ GOEDOC, SUB GOETTINGEN