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Spin transitions induced by a magnetic field in quantum dot molecules

Ramin M. Abolfath·Pawel Hawrylak
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Abstract

We present a theoretical study of magnetic field driven spin transitions of electrons in coupled lateral quantum dot molecules. A detailed numerical study of spin phases of artificial molecules composed of two laterally coupled quantum dots with N=8 electrons is presented as a function of magnetic field, Zeeman energy, and the detuning using real space Hartree-Fock Configuration Interaction (HF-CI) technique. A microscopic picture of quantum Hall ferromagnetic phases corresponding to zero and full spin polarization at filling factors $ν=2$ and $ν=1$, and ferrimagnetic phases resulting from coupling of the two dots, is presented.

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Ramin M. Abolfath, Pawel Hawrylak. 2008-04-30. Spin transitions induced by a magnetic field in quantum dot molecules. https://doi.org/10.1103/physrevb.77.165430

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