Control of shell filling with Coulomb interaction in quantum dots side-coupled to quantum wires
Tomohiro Otsuka, Eisuke Abe, Yasuhiro Iye, and Shingo Katsumoto
Physica Status Solidi (c) 5 2873 (2008) Modify
We report the control of the orbital occupation by using the intra-orbital Coulomb interaction in quantum dots T-coupled to quantum wires. With the change of the confinement potential, intra-orbital Coulomb interaction exceeds
orbital level spacing and influences the orbital occupation. We realize such potential modification by changing either the gate design or the voltages applied to the gates. The rearrangement of the orbital occupation
is confirmed from the response of the addition energy spectroscopy to the magnetic field.