Emi Kano, Shuto Hattori, Kenji Shiraishi, Atsushi Oshiyama, Takahide Umeda, Tetsuo Narita, Tetsu Kachi, Nobuyuki Ikarashi. "Structure of the very first atomic layer of Ga oxide on GaN at GaN oxidation front." Applied Physics Letters (2025). https://doi.org/10.1063/5.0274521