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arXiv · 1001.5395

Interaction-Induced Spin Polarization in Quantum Dots

M. C. Rogge·E. Rasanen·R. J. Haug
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Abstract

The electronic states of lateral many electron quantum dots in high magnetic fields are analyzed in terms of energy and spin. In a regime with two Landau levels in the dot, several Coulomb blockade peaks are measured. A zig-zag pattern is found as it is known from the Fock-Darwin spectrum. However, only data from Landau level 0 show the typical spin-induced bimodality, whereas features from Landau level 1 cannot be explained with the Fock-Darwin picture. Instead, by including the interaction effects within spin-density-functional theory a good agreement between experiment and theory is obtained. The absence of bimodality on Landau level 1 is found to be due to strong spin polarization.

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M. C. Rogge, E. Rasanen, R. J. Haug. 2010-01-29. Interaction-Induced Spin Polarization in Quantum Dots. https://doi.org/10.1103/physrevlett.105.046802

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