Doping effects on the electronic structure of CuO2 planes

Grioni, M.Berger, H.Larosa, S.Vobornik, I.Zwick, F.Margaritondo, G.Kelley, R.Ma, J.Onellion, M.2006-10-032006-10-032006-10-03199710.1016/S0921-4526(96)00642-4https://infoscience.epfl.ch/handle/20.500.14299/234737WOS:A1997WW40300239We have exploited angle-resolved photoelectron spectroscopy to study changes in the quasiparticle excitations of CuO2 planes as a function of the carrier density, in optimally doped and underdoped Bi2Sr2CaCuO8+x and in Sr2CuO2Cl2. We have observed large changes in the E versus k dispersion of the quasiparticle bands, and in the topology of the Fermi surface away from optimal doping. We have also found that the carrier density has a nontrivial effect on the symmetry properties of these states.Sr2CuO2Cl2Bi2Sr2CaCuO8+xphotoemissionSR2CUO2CL2DENSITYSR2CUO2CL2Doping effects on the electronic structure of CuO2 planestext::journal::journal article::research article