Hydrostatic and chemical pressure tuning of CeFeAs1-xPxO single crystals

TitleHydrostatic and chemical pressure tuning of CeFeAs1-xPxO single crystals
Publication TypeJournal Article
Year of Publication2012
AuthorsMydeen K, Lengyel E, Jesche A, Geibel C, Nicklas M
Journal TitlePhysical Review B
Volume86
Pages134523
Date Published10
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000310129000007
Keywords43 k, compound, superconductivity
Abstract

We carried out a combined P substitution and hydrostatic pressure study on CeFeAs1-xPxO single crystals in order to investigate the peculiar relationship of the local moment magnetism of Ce, the ordering of itinerant Fe moments, and their connection with the occurrence of superconductivity. Our results evidence a close relationship between the weakening of Fe magnetism and the change from antiferromagnetic to ferromagnetic ordering of Ce moments at p* = 1.95 GPa in CeFeAs0.78P0.22O. The absence of superconductivity in CeFeAs0.78P0.22O and the presence of a narrow and strongly pressure sensitive superconducting phase in CeFeAs0.70P0.30O and CeFeAs0.65P0.35O indicate the detrimental effect of the Ce magnetism on superconductivity in P-substituted CeFeAsO.

URL<Go to ISI>://WOS:000310129000007
DOI10.1103/PhysRevB.86.134523
Alternate JournalPhys. Rev. B