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arXiv · 2010.10489

Electron g-factor in nanostructures: continuum media and atomistic approach

Krzysztof Gawarecki·Michał Zieliński
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Abstract

We report studies of $k$-dependent Land\'e $g$-factor, performed by both continuous media approximation k.p method, and atomistic tight-binding sp$^3$d$^5$s$^*$ approach. We propose an effective, mesoscopic model for InAs that we are able to successfully compare with atomistic calculations, for both very small and very large nanostructures, with a number of atoms reaching over 60 million. Finally, for nanostructure dimensions corresponding to near-zero $g$-factor we report electron spin states anti-crossing as a function of system size, despite no shape-anisotropy nor strain effects included, and merely due to breaking of atomistic symmetry of cation/anion planes constituting the system.

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Krzysztof Gawarecki, Michał Zieliński. 2020-10-20. Electron g-factor in nanostructures: continuum media and atomistic approach. https://arxiv.org/abs/2010.10489

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