Tunneling transport and spectroscopy in carbon nanotube quantum dots.
This paper provides a theoretical description of sequential tunneling transport and spectroscopy, in carbon nanotube quantum dots weakly tunnel coupled to metallic leads under a voltage bias. The effects of Coulomb blockade charging, spin-orbit fine structure, and orbital- and spin-Zeeman effects arising from coupling to applied magnetic fields are considered; and the dependence of the conductance upon applied gate voltage, bias voltage, and magnetic fields is determined. The work is motivated by recent experiments on ultraclean carbon nanotube dots [Kuemmeth et al., Nature (London) 452, 448 (2008)], to which comparison is made.
Logan
David E
DE
Department of Chemistry, Physical and Theoretical Chemistry, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom. dlogan@physchem.ox.ac.uk
Galpin
Martin R
MR
D008280:Magnetics; D016252:Microscopy, Scanning Tunneling / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D045663:Quantum Dots
D037742:Nanotubes, Carbon