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Integer filling facfor phases and isospin in vertical diatomic artificial molecules

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Integer filling factor phases of many-electron vertically coupled diatomic artificial quantum dot molecules are investigated for different values of the interdot coupling. The experimental results are analyzed within local-spin density functional theory for which we have determined a simple lateral confining potential law that can be scaled for the different coupling regimes, and Hartree-Fock theory. Maximum density droplets composed of electrons in both bonding and antibonding or just bonding states are revealed, and interesting isospin-flip physics appears for weak interdot coupling when the systematic depopulation of antibonding states leads to changes in isospin.

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AUSTING, D. G., et al. Integer filling facfor phases and isospin in vertical diatomic artificial molecules. Physical Review B. 2004. Vol. 70, num. 4, pags. 45324-1-45324-8. ISSN 0163-1829. [consulted: 26 of May of 2026]. Available at: https://hdl.handle.net/2445/10546

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