title: Iron-based layered superconductor: LaOFeP.
abstract: We report superconductivity in an iron-based layered oxy-pnictide LaOFeP. LaOFeP is composed of an alternate stack of lanthanum oxide (La3+O2-) and iron pnictide (Fe2+P3-) layers. Magnetic and electrical resistivity measurements verify the occurrence of the superconducting transition at approximately 4 K.
authors.affiliation: ERATO-SORST, JST, Frontier Collaborative Research Center, Tokyo Institute of Technology, Mail Box S2-13, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Kamihara
authors.forename: Hidenori
authors.initials: H
authors.lastname: Hiramatsu
authors.forename: Masahiro
authors.initials: M
authors.lastname: Hirano
authors.forename: Ryuto
authors.initials: R
authors.lastname: Kawamura
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yanagi
authors.forename: Toshio
authors.initials: T
authors.lastname: Kamiya
authors.forename: Hideo
authors.initials: H
authors.lastname: Hosono