title: Surprising resistivity decrease in manganites with constant electronic density.
abstract: A decrease of eight orders of magnitude in the resistance of (La0.5Ca0.5)zMnO3 has been detected when the electronic density is kept constant while the calcium content is modified by introducing cationic vacancies. This effect is related to the disappearance of the charge ordering state and the emergence of an antiferromagnetic–ferromagnetic transition. Moreover, high values of the colossal magnetoresistance above room temperature are attained.
authors.forename: R
authors.initials: R
authors.lastname: Cortés-Gil
authors.forename: M L
authors.initials: ML
authors.lastname: Ruiz-González
authors.forename: J M
authors.initials: JM
authors.lastname: Alonso
authors.forename: J L
authors.initials: JL
authors.lastname: Martínez
authors.forename: A
authors.initials: A
authors.lastname: Hernando
authors.forename: M
authors.initials: M
authors.lastname: Vallet-Regí
authors.forename: J M
authors.initials: JM
authors.lastname: González-Calbet
mesh_terms: D002118:Calcium / Q000737:chemistry; D004583:Electrons; D060328:Magnetic Phenomena; D017895:Manganese Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D013696:Temperature
chemical_list: D017895:Manganese Compounds; D010087:Oxides; C494384:manganite; C027424:manganese oxide; D002118:Calcium