Title: Absence of superconductivity in fluorine-doped neptunium pnictide NpFeAsO
Authors: WALTERS A. C.WALKER H.c.SPRINGELL RossKIRSCH M.BOSAK A.HILL A. H.ZVORISTE CARMEN ELENACOLINEAU EricGRIVEAU Jean-ChristopheBOUEXIERE DanielELOIRDI RachelCACIUFFO RobertoKLIMCZUK Tomasz
Citation: JOURNAL OF PHYSICS-CONDENSED MATTER vol. 27 no. 32 p. 325702
Publisher: IOP PUBLISHING LTD
Publication Year: 2015
JRC N°: JRC92145
ISSN: 0953-8984
URI: http://iopscience.iop.org/article/10.1088/0953-8984/27/32/325702/meta;jsessionid=A933C7CA4C775185F7A40BB39AE56A4A.c1
http://publications.jrc.ec.europa.eu/repository/handle/JRC92145
DOI: 10.1088/0953-8984/27/32/325702
Type: Articles in periodicals and books
Abstract: X-ray diffraction, specific heat, magnetic susceptibility and inelastic x-ray scattering measurements on the transurarium oxypnictides NpFeAsO and NpFeAsO0.85F0.15 are presented. No superconductivity down to 2 K was observed upon fluorine doping, contrary to the structurally analogous rare-earth pnictides. No modification of the phonon density of states was observed upon doping with fluorine. We discuss our results in light of the latest experimental and theoretical studies on the role of phonons in the superconducting pnictide compounds.
JRC Directorate:Nuclear Safety and Security

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