Title:
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Integer filling facfor phases and isospin in vertical diatomic artificial molecules
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Author:
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Austing, D. G.; Tarucha, S.; Tamura, H.; Muraki, K.; Ancilotto, Francesco; Barranco Gómez, Manuel; Emperador, Agustí; Mayol Sánchez, Ricardo; Pi Pericay, Martí
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Spin (Física nuclear) -Diagrames de fase -Teoria del funcional de densitat -Estructura electrònica -Semiconductors -Nuclear spin -Phase diagrams -Density functional theory -Electronic structure -Semiconductors |
Rights:
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(c) The American Physical Society, 2004
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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