Abstract
Carbon nanotube (CNT) based transistors, for example, are especially interesting for both fundamentals of quantum transport and technology. They are quasi one-dimensional organic conductors in which electrons can propagate ballistically over very long distances. A CNT can be used as a nanometric channel for a device in which electron transmission can be modulated by a suitable gate potential, just like in standard FET devices. In this work the coherent transport properties of a coaxially gated semiconducting CNT were calculated using an ab-initio approach based on a self-consistent density-functional tight-binding method and the non-equilibrium Green's function formalism we have previously implemented.
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