Journal
PHYSICAL REVIEW B
Volume 70, Issue 20, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.70.205318
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Laterally coupled asymmetric quantum dots occupied by two electrons are studied using the exact diagonalization approach. It is shown that the asymmetry enhances the exchange energy, i.e., the triplet-singlet energy difference for finite magnetic fields. At high magnetic field, electrons enter the deepest dot more easily if they have parallel spins.
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