title: 55Mn NMR investigation of electronic phase separation in La1-xCaxMnO3 for 0.2 < or = x < or = 0.5.
abstract: 55Mn NMR line shape measurements in La1-xCaxMnO3 for 0.20< or =x< or =0.50 provide experimental evidence about the existence of two distinct regions in the T-x magnetic phase diagram, where the homogeneous ferromagnetic (FM) metallic state is separated into FM metallic and FM insulating regions. These results are in agreement with recent theoretical predictions, which reveal a novel electronic phase separation in two FM states, providing orbital ordering and Jahn-Teller phonons are taken into consideration.
authors.affiliation: Institute of Materials Science, National Center for Scientific Research "Demokritos," 153 10 Athens, Greece.
authors.forename: G
authors.initials: G
authors.lastname: Papavassiliou
authors.forename: M
authors.initials: M
authors.lastname: Fardis
authors.forename: M
authors.initials: M
authors.lastname: Belesi
authors.forename: T G
authors.initials: TG
authors.lastname: Maris
authors.forename: G
authors.initials: G
authors.lastname: Kallias
authors.forename: M
authors.initials: M
authors.lastname: Pissas
authors.forename: D
authors.initials: D
authors.lastname: Niarchos
authors.forename: C
authors.initials: C
authors.lastname: Dimitropoulos
authors.forename: J
authors.initials: J
authors.lastname: Dolinsek