Spin ordering in magnetic quantum dots: From core-halo to Wigner molecules

Abstract

The interplay of confinement and Coulomb interactions in quantum dots can lead to strongly correlated phases differing qualitatively from the Fermi liquid behavior. We explore how the presence of magnetic impurities in quantum dots can provide additional opportunities to study correlation effects and the resulting ordering in carrier and impurity spin. By employing exact diagonalization we reveal that seemingly simple two-carrier quantum dots lead to a rich phase diagram. We propose experiments to verify our predictions, in particular we discuss interband optical transitions as a function of temperature and magnetic field.

5 pages, 5 figures + 4 pages of auxiliary material; published version

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Cited by in corpus (5)

• Time-resolved magnetophotoluminescence studies of magnetic polaron dynamics in type-II quantum dots
• Spin-orbit coupled particle in a spin bath
• Nonmonotonic buildup of spin-singlet correlations in a double quantum dot
• Magnetic ordering in quantum dots: Open vs. closed shells
• Multiband Electronic Structure of Magnetic Quantum Dots: Numerical Studies