Abstract:
Artificial molecules, namely laterally coupled quantum dots with a three-dimensional spherical confinement potential well of radius R and depth V 0, were studied by the unrestricted Hartree-Fock-Roothaan (UHFR) method. By varying the distance d between the centers of the two coupled quantum dots, the transition from the strong coupling situation to the weak one is realized. Hund's rule, suitable for a single quantum dot is destroyed in certain conditions in the artificial molecule. For example, in the few-electron system of the strongly coupled quantum-dot molecule, a transformation of spin configuration has been found.
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Received 8 March 2002 / Received in final form 29 May 2002 Published online 17 September 2002
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Dai, Z., Sun, J., Zhang, L. et al. Spin configuration transformation in laterally coupled few-electron artificial molecules. Eur. Phys. J. B 29, 141–145 (2002). https://doi.org/10.1140/epjb/e2002-00272-0
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DOI: https://doi.org/10.1140/epjb/e2002-00272-0