Ibrahim, K (reprint author), Chinese Acad Sci, Inst High Energy Phys, Synchrotron Radiat Lab, Beijing 100039, Peoples R China.
Article; Proceedings Paper
Valence band photoemission experiments on Pr1-xSrxMnO3 polycrystalline system with x ranging from 0.0 to 0.4 show that the density of states of the bands appearing in the ranges between Fermi level and similar to 12 eV below Fermi level have a substantial change with the doping level x. These features are discussed in terms of charge transfer in the ground states of Pr1-xSrxMnO3 system. A nonlinear charge transfer with the doping amount x is evidenced and a possible second order phase transition mediated by the charge transfer is proposed. (C) 2000 Elsevier Science S.A. All rights reserved.