Zeeman spin-splitting in the (010) β-Ga2O3 two-dimensional electron gas

Abstract

Through magnetotransport measurements and analysis of the observed Shubnikov de-Haas oscillations in (010) (AlxGa1-x)2O3/Ga2O3 heterostructures, spin-splitting of the Landau levels in the (010) Ga2O3 two-dimensional electron gas (2DEG) has been studied. Analysis indicates that the spin-splitting results from the Zeeman effect. By fitting both the first and second harmonics of the oscillations as a function of magnetic field, we determine the magnitude of the Zeeman splitting to be 0.4 Latin small letter h with strokeωc, with a corresponding effective g-factor of 2.7, for the magnetic field perpendicular to the 2DEG.