We experimentally determine isotropic and anisotropic g-factor corrections in lateral GaAs single-electron quantum dots. We extract the Zeeman splitting by measuring the tunnel rates into the individual spin states of an empty quantum dot for an in-plane magnetic field with various strengths and directions. We quantify the Zeeman energy and find a linear dependence on the magnetic field strength which allows us to extract the g-factor. The measured g-factor is understood in terms of spin-orbit interaction induced isotropic and anisotropic corrections to the GaAs bulk g-factor. Because this implies a dependence of the spin splitting on the magnetic field direction, these findings are of significance for spin qubits in GaAs quantum dots.
@article{arxiv.2010.11185,
title = {Isotropic and Anisotropic g-factor Corrections in GaAs Quantum Dots},
author = {Leon C. Camenzind and Simon Svab and Peter Stano and Liuqi Yu and Jeramy D. Zimmerman and Arthur C. Gossard and Daniel Loss and Dominik M. Zumbühl},
journal= {arXiv preprint arXiv:2010.11185},
year = {2021}
}