Hossain, M. A.;Mottershead, J. D. F.;Fournier, D.;Bostwick, A.;McChesney, J. L.;Rotenberg, E.;Liang, R.;Hardy, W. N.;Sawatzky, G. A.;Elfimov, I. S.;Bonn, D. A.;Damascelli, A.In situ doping control of the surface of high-temperature superconductorsNat Phys200847527-531