Lü Hao-Chang, Zhao Yun-Chi, Yang Guang, Dong Bo-Wen, Qi Jie, Zhang Jing-Yan, Zhu Zhao-Zhao, Sun Yang, Yu Guang-Hua, Jiang Yong, Wei Hong-Xiang, Wang Jing, Lu Jun, Wang Zhi-Hong, Cai Jian-Wang, Shen Bao-Gen, Yang Feng, Zhang Shen-Jin, Wang Shou-Guo. High resolution imaging based on photo-emission electron microscopy excited by deep ultraviolet laserJ. Acta Physica Sinica, 2020, 69(9): 096801. DOI: 10.7498/aps.69.20200083