Photon-assisted tunneling in a carbon nanotube quantum dot.
We report on photon-assisted tunneling (PAT) experiments in a carbon nanotube quantum dot using microwave frequencies between 20 and 60 GHz. In addition to the basic PAT effect, revealed by the appearance of two extra resonances in the current through the dot, we use PAT for spectroscopy of excited states. The experimental data are in good agreement with simulations.
Meyer
Carola
C
Research Centre Jülich, Institute of Solid State Research, Electronic Properties, 52425 Jülich, Germany. c.meyer@fz-juelich.de
Elzerman
Jeroen M
JM
Kouwenhoven
Leo P
LP