Quantum Dot from Chiral Metallic Single Walled Nanotubes

Abstract

We propose a simple approach to construct a quantum-dot and it's electrodes using chiral metallic single walled carbon nanotube (CM-SWCNT) segments of exactly opposite chiralities (m, n) and (n, m). The degree and energetics of electron confinement crucially depends on the choice of n and m, and collinearity of the SWCNT segments constituting the quantum-dot and the electrodes. All the segments can in principle be obtained through simple manipulations of fragments of a single nanotube of chirality either (m, n) or (n, m).