Showing papers by "University of Electronic Science and Technology of China published in 1899"
31 Dec 1899
TL;DR: In this paper, the authors studied the coupling effect in laterally stacked symmetric and asymmetric 1 xx A lG a As − quantum-dotmolecules (QDMs) and showed that the coupling criterion of QDs is the energy levels split due to the tunneling effect.
Abstract: The electronic states and coupling effect in the laterally stacked symmetric and asymmetric 1 xx A lG a As − quantum-dotmolecules (QDMs) are studied. The formed potential of QDM is approximated with parabolic and modified PoschelTeller (MPT) potentials. It is shown that the coupling criterion of quantum dots (QDs) is the energy levels split due to the tunneling effect. In the case of the asymmetric QDM the electron relocalization step-like behavior is revealed, while in the symmetric case it is principally impossible. The obtained results for parabolic and modified Poschel-Teller potential confinements are compared. The formation of energy levels split for a given range of values of energy (coupling criterion) as a consequence of the finiteness of the confinement potential is revealed for the case of modified PoschelTeller potential approximation.