[7p-PB5-1~4] 13.7 Nanostructures, quantum phenomena, and nano quantum devices

[7p-PB5-2] The influence of periodic potential by GaN nanocolumns on GaN/AlGaN 2D-electron gas

〇Haruko Miyaji¹, Kenichi Oto¹, Toshihiro Nakaoka², Shunsuke Ishizawa², Katsumi Kishino² (1.Chiba Univ., 2.Sophia Univ.)

Keywords:nanocolumns

We have studied the magneto-resistance in GaN/AlGaN 2D-electron gas (2DEG) underneath the GaN nanocolumns array at low temperatures and in high magnetic field to detect the information of electronic state in the nanocolumns.The Shubnikov-de Haas oscillations, the commensurate oscillations, adnd the magneto-resistance due to the weak localization reveal the induced periodic potential into the 2DEG by the GaN nanocolumns.