Optical evidence of surface state suppression in Bi-based topological insulators

Anjan A. Reijnders, Y. Tian, L. J. Sandilands, G. Pohl, I. D. Kivlichan, S. Y.Frank Zhao, S. Jia, M. E. Charles, R. J. Cava, Nasser Alidoust, Suyang Xu, Madhab Neupane, M. Zahid Hasan, X. Wang, S. W. Cheong, K. S. Burch