Oscillations of Low-Field Magnetoresistivity of Two-Dimensional Electron Gases in Al0.22Ga0.78N/GaN Heterostructures in a Weak Localization Region

摘要

@@ Low-field magnetotransport properties of two-dimensional electron gases(2DEGs) are investigated in Al0.22Ga0.78 N/GaN heterostructures.By means of a tilting magnetic field, unexpected oscillations of magnetoresistivity are observed in a weak localization region.Qualitative understanding based on Altshuler-Aronov-Spivak oscillations is proposed for the case of interface disorder in Al0.22Ga0.78N/GaN heterostructures.