title: Giant magnetoresistance in oxypnictides (La,Nd)OMnAs.
abstract: A sizeable negative magnetoresistance (MR) has been observed for oxypnictides LnOMnAs (Ln = La,Nd). MR up to -24% is observed at 200 K for LaOMnAs which is unprecedented for divalent Mn(2+). Both materials are weak ferromagnets with transition temperatures above room temperature.
authors.affiliation: The Chemistry Department, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, UK.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Emery
authors.forename: Eve J
authors.initials: EJ
authors.lastname: Wildman
authors.forename: Janet M S
authors.initials: JM
authors.lastname: Skakle
authors.forename: Gaetan
authors.initials: G
authors.lastname: Giriat
authors.forename: Ron I
authors.initials: RI
authors.lastname: Smith
authors.forename: Abbie C
authors.initials: AC
authors.lastname: Mclaughlin