Access

Letter

Nature Physics 4, 527–531 (1 July 2008) | doi:10.1038/nphys998

In situ doping control of the surface of high-temperature superconductors

M. A. Hossain , J. D. F. Mottershead , D. Fournier , A. Bostwick , J. L. McChesney , E. Rotenberg , R. Liang , W. N. Hardy , G. A. Sawatzky , I. S. Elfimov , D. A. Bonn & A. Damascelli

Central to the understanding of high-temperature superconductivity is the evolution of the electronic structure as doping alters the density of charge carriers in the CuO2 planes. Superconductivity emerges along the path from a normal metal on the overdoped side to an antiferromagnetic insulator on the underdoped side.