RT Journal T1 Impurity Effects at Surfaces of a Photon-Dressed Bi$_2$Se$_3$ Thin Film A1 Qiu-Shi Wang, Bin Zhang, Wei-Zhu Yi, Meng-Nan Chen, Baigeng Wang, R. Shen PB Chin. Phys. Lett. FD 2018-09-15 YR 2018 JF Chinese Physics Letters JO Chin. Phys. Lett. VO 35 IS 10 SP 107201DO 10.1088/0256-307X/35/10/107201 K1 LK {https://cpl.iphy.ac.cn/EN/article/article_71282.shtml}