title: Giant magnetoresistance in the half-metallic double-perovskite ferrimagnet Mn2FeReO6.
abstract: The first transition-metal-only double perovskite compound, Mn(2+) 2 Fe(3+) Re(5+) O6 , with 17 unpaired d electrons displays ferrimagnetic ordering up to 520 K and a giant positive magnetoresistance of up to 220 % at 5 K and 8 T. These properties result from the ferrimagnetically coupled Fe and Re sublattice and are affected by a two-to-one magnetic-structure transition of the Mn sublattice when a magnetic field is applied. Theoretical calculations indicate that the half-metallic state can be mainly attributed to the spin polarization of the Fe and Re sites.
authors.affiliation: Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854 (USA).
authors.forename: Man-Rong
authors.initials: MR
authors.lastname: Li
authors.affiliation: Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854 (USA).|Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen (Denmark).
authors.forename: Maria
authors.initials: M
authors.lastname: Retuerto
authors.affiliation: Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854 (USA).
authors.forename: Zheng
authors.initials: Z
authors.lastname: Deng
authors.affiliation: Department of Physics & Astronomy, State University of New York, Stony Brook, NY 11794 (USA).
authors.forename: Peter W
authors.initials: PW
authors.lastname: Stephens
authors.affiliation: Department of Physics & Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854 (USA).
authors.forename: Mark
authors.initials: M
authors.lastname: Croft
authors.affiliation: Center for Neutron Research, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899-6102 (USA).
authors.forename: Qingzhen
authors.initials: Q
authors.lastname: Huang
authors.affiliation: Center for Neutron Research, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899-6102 (USA).
authors.forename: Hui
authors.initials: H
authors.lastname: Wu
authors.affiliation: Department of Physics & Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854 (USA).
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Deng
authors.affiliation: Department of Physics & Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854 (USA).
authors.forename: Gabriel
authors.initials: G
authors.lastname: Kotliar
authors.affiliation: Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid (Spain).
authors.forename: Javier
authors.initials: J
authors.lastname: Sánchez-Benítez
authors.affiliation: EMAT, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp (Belgium).
authors.forename: Joke
authors.initials: J
authors.lastname: Hadermann
authors.affiliation: Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY 10964 (USA).
authors.forename: David
authors.initials: D
authors.lastname: Walker
authors.affiliation: Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854 (USA). martha@rutchem.rutgers.edu.
authors.forename: Martha
authors.initials: M
authors.lastname: Greenblatt
keywords: density functional calculations; giant magnetoresistance; half-metallicity; magnetic properties; perovskite phases