Zeeman Spin-Splitting In The (010) Beta-Ga2o3 Two-Dimensional Electron Gas

Through magnetotransport measurements and analysis of the observed Shubnikov de-Haas oscillations in (010) (AlxGa1-x)(2)O-3/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 h omega(c), with a corresponding effective g-factor of 2.7, for the magnetic field perpendicular to the 2DEG.