Excited state spectroscopy in carbon nanotube double quantum dots.
We report on low-temperature measurements in a fully tunable carbon nanotube double quantum dot. A new fabrication technique has been used for the top-gates in order to avoid covering the whole nanotube with an oxide layer as in previous experiments. The top-gates allow us to form single dots and control the coupling between them, and we observe 4-fold shell filling. We perform inelastic transport spectroscopy via the excited states in the double quantum dot, a necessary step toward the implementation of new microwave-based experiments.
Sapmaz
Sami
S
Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands. sami@qt.tn.tudelft.nl
Meyer
Carola
C
Beliczynski
Piotr
P
Jarillo-Herrero
Pablo
P
Kouwenhoven
Leo P
LP
D018625:Microscopy, Atomic Force; D037742:Nanotubes, Carbon; D045663:Quantum Dots; D013057:Spectrum Analysis / Q000379:methods
D037742:Nanotubes, Carbon