Spin-dependent electronic hybridization in a rope of carbon nanotubes

Abstract

We demonstrate single electron addition to different strands of a carbon nanotube rope. Anticrossings of anomalous conductance peaks occur in quantum transport measurements through the parallel quantum dots forming on the individual strands. We determine the magnitude and the sign of the hybridization as well as the Coulomb interaction between the carbon nanotube quantum dots, finding that the bonding states dominate the transport. In a magnetic field the hybridization is shown to be selectively suppressed due to spin effects.

4 pages, 4 figures

References in corpus (7)

• Coupling of Spin and Orbital Motion of Electrons in Carbon Nanotubes
• Orbital Kondo effect in carbon nanotubes
• Carbon nanotubes as ultra-high quality factor mechanical resonators
• Tunable few-electron double quantum dots and Klein tunnelling in ultra-clean carbon nanotubes
• Electronic excitation spectrum of metallic carbon nanotubes
• Molecular states in carbon nanotube double quantum dots
• Excited state spectroscopy in carbon nanotube double quantum dots

Cited by in corpus (4)

• Fermionic superoperators for zero-temperature non-linear transport: real-time perturbation theory and renormalization group for Anderson quantum dots
• Transport studies of electron-hole and spin-orbit interaction in GaSb/InAsSb core-shell nanowire quantum dots
• Interaction effects in electric transport through self-assembled molecular monolayers
• Comprehensive characterization of an individual carbon nanotube transport device