The authors report investigations of two-dimensional electron gases (2DEG) formed due to the band offset and the change of the polarization at MgZnO/ZnO interfaces grown on sapphire substrates by pulsed-laser deposition. Capacitance-voltage measurements provide the means to resolve the electron density at the MgZnO/ZnO interface. The density of the 2DEGs is of the order 1011cm-2 and much lower than expected from the change of polarization. The free electron density in the MgZnO is not sufficient to compensate the polarization charges. © 2009 American Institute of Physics.
CITATION STYLE
Von Wenckstern, H., Zippel, J., Lajn, A., Brandt, M., Biehne, G., Hochmuth, H., … Grundmann, M. (2009). Two-dimensional electron gases in MgZnO/ZnO heterostructures. In AIP Conference Proceedings (Vol. 1199, pp. 99–100). https://doi.org/10.1063/1.3295572
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