ABSTRACT
The transport properties of atomic and molecular systems are a subject the intense research. Lithographically defined quantum dots (QDs), which are frequently called artificial atoms, are nanoscale systems in which electrons are constrained by quantum confinement created by heterobarriers and a spatially separated dopant charge distribution around the dot modulated by external gate voltages. During the single-electron tunneling process, the QD electronic configuration fluctuates between N- and (N –1)-electron states, so that carrier transmission depends on the detailed occupation of the many-body energy states. At high magnetic fields, the large density of states and the number of the transport mechanisms involved result in smaller changes in the current at each new transport channel, leading to an overall decrease in visibility of individual current features.
