Tuning conductance in C sub(60) devices: defective C sub(60) and endohedral C sub(60) complex

The transport properties and I-V characteristics of C sub(60), defective C sub(60), endohedral C sub(59) complex, and endohedral C sub(60) complex devices have been investigated. The transmission coefficients of the C sub(60) devices have been found to be largely affected by either defect or doping an atom in the center of the C sub(60). The conductance in C sub(60) devices can also be tuned by both defect and doping. In particular, doping an atom into the center of C sub(60) has an obvious effect on tuning conductance. C sub(60), N sub(60), and O sub(60) double the current of the C sub(60) device, while B sub(60) terminates the current at low voltage.