Fabry-Perot interference, Kondo effect and Coulomb blockade in carbon nanotubes

Abstract

High quality single wall carbon nanotube quantum dots have been made showing both metallic and semiconducting behavior. Some of the devices are identified as small band gap semiconducting nanotubes with relatively high broad conductance oscillations for hole transport through the valence band and low conductance Coulomb blockade oscillations for electron transport through the conduction band. The transition between these regimes illustrates that transport evolves from being wave-like transmission known as Fabry-Perot interference to single particle-like tunneling of electrons or holes. In the intermediate regime four Coulomb blockade peaks appear in each Fabry-Perot resonance, which is interpreted as entering the SU(4) Kondo regime. A bias shift of opposite polarity for the Kondo resonances for one electron and one hole in a shell is in some cases observed.

Proceeding for the International workshop on Quantum Coherence, Noise and decoherence in nanostructures (DECON'06). See published version for improved figure quality

References in corpus (4)

• Orbital Kondo effect in carbon nanotubes
• Nonequilibrium Singlet-Triplet Kondo Effect in Carbon Nanotubes
• Electronic excitation spectrum of metallic carbon nanotubes
• Kondo Effects in Carbon Nanotubes: From SU(4) to SU(2) symmetry

Cited by in corpus (5)

• Spin-orbit interaction and anomalous spin relaxation in carbon nanotube quantum dots
• The electron transport through a quantum dot in the Coulomb blockade regime: Non-equilibrium Green's functions based model
• Spin polarized current and shot noise in carbon nanotube quantum dot in the Kondo regime
• Spectrum of Andreev Bound States in a Molecule Embedded Inside a Microwave-Excited Superconducting Junction
• Multi-terminal spin-dependent transport in ballistic carbon nanotubes