High-Field Resistance Surge in a Carbon Nanotube Ballistic Resistor

A newfangled paradigm through deployment of the nonequilibrium Aroraa？？s distribution function (NEADF) for resistance surge in a carbon nanotube (CNT) ballistic conductor is presented. The experimental nonlinear I-V characteristics, when voltage across the length of a resistor is higher than its critical value, defy ohmic and ballistic transmission through a CNT. The scattering-limited lowfield restance Ro is shown not to be valid when voltage is higher than its critical value Vc=IsatRo where Isat is the saturation current. Both Ro and Vc are needed to characterize a nano resistive channel with default infinite value of Vc for an ohmic resistor. The finite value of Vc necessitates differentiation of incremental signal resistance from the direct one, bringing to focus the surge with the applied voltage. Isat is shown to be limited by the intrinsic velocity which is the Fermi velocity in a metallic CNT