Millimetre-long transport of photogenerated carriers in topological insulators oleh Yasen Hou, Rui Wang, Rui Xiao, Luke McClintock, Henry Clark Travaglini, John Paulus Francia, Harry Fetsch, Onur Erten, Sergey Y. Savrasov, Baigeng Wang, Antonio Rossi, Inna Vishik, Eli Rotenberg, Dong Yu