Repeatable Room Temperature Negative Differential Resistance in AlN/GaN Resonant Tunneling Diodes Grown on Sapphire - Wang, Ding; Su, Juan; Chen, Zhaoying; Tao Wang; Yang, Liuyun; Sheng, Bowen; Lin, Shaojun; Rong, Xin; Wang, Ping; Shi, Xiangyang; others (Advanced Electronic Materials, 2019)