Yu, Kwangnam, Nguyen Van Luan, Taesoo Kim, Jiwon Jeon, Jiho Kim, Pilkyung Moon, Young Hee Lee, and E. J. Choi. "Gate tunable optical absorption and band structure of twisted bilayer graphene." Physical Review B 99, no. 24 (2019): 241405.
Yu, Kwangnam, Nguyen Van Luan, Taesoo Kim, Jiwon Jeon, Jiho Kim, Pilkyung Moon, Young Hee Lee, and E. J. Choi. "Gate tunable optical absorption and band structure of twisted bilayer graphene." Physical Review B 99, no. 24 (2019): 241405.