Geng Xin, Zhang Jie-Yin, Lu Wen-Long, Ming Ming, Liu Fang-Ze, Fu Bin-Xiao, Chu Yi-Xin, Yan Mou-Hui, Wang Bao-Chuan, Zhang Xin-Ding, Guo Guo-Ping, Zhang Jian-Jun. Epitaxy and characterization of undoped Si/SiGe heterojunctionsJ. Acta Physica Sinica, 2024, 73(11): 117302. DOI: 10.7498/aps.73.20240310