title: Electronic self-organization in the single-layer manganite Pr1-xCa1+xMnO4.
abstract: We use neutron scattering to investigate the doping evolution of the magnetic correlations in the single-layer manganite Pr1-xCa1+xMnO4, away from the x=0.5 composition where the CE-type commensurate antiferromagnetic (AF) structure is stable. We find that short-range incommensurate spin correlations develop as the system is electron doped (x<0.5), which coexist with the CE-type AF order. This suggests that electron doping in this system induces an inhomogeneous electronic self-organization, where commensurate AF patches with x=0.5 are separated by electron-rich domain walls with short-range magnetic correlations. This behavior is strikingly different than for the perovskite Pr1-xCaxMnO3, where the long-range CE-type commensurate AF structure is stable over a wide range of electron or hole doping around x=0.5.
authors.affiliation: Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, USA. yef1@ornl.gov
authors.forename: F
authors.initials: F
authors.lastname: Ye
authors.forename: Songxue
authors.initials: S
authors.lastname: Chi
authors.forename: J A
authors.initials: JA
authors.lastname: Fernandez-Baca
authors.forename: A
authors.initials: A
authors.lastname: Moreo
authors.forename: E
authors.initials: E
authors.lastname: Dagotto
authors.forename: J W
authors.initials: JW
authors.lastname: Lynn
authors.forename: R
authors.initials: R
authors.lastname: Mathieu
authors.forename: Y
authors.initials: Y
authors.lastname: Kaneko
authors.forename: Y
authors.initials: Y
authors.lastname: Tokura
authors.forename: Pengcheng
authors.initials: P
authors.lastname: Dai