TY - JOUR A1 - Urbina Yeregui, Antonio AU - Echevarría, I. AU - Pérez Garrido, Antonio AU - Díaz Sánchez, Anastasio AU - Abellán García, Francisco Javier T1 - Quantum conductance steps in solutions of multiwalled carbon nanotubes Y1 - 2003 SN - 1079-7114 UR - http://arxiv.org/abs/cond-mat/0305261 UR - http://hdl.handle.net/10317/582 AB - 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. KW - Física Aplicada KW - Nanotubos de carbón KW - Electrónica molecular KW - Sustrato de oro LA - eng PB - American Physical Society ER -