Static Magnetic Order and Superfluid Density of RFeAsO; (R = La, Nd, Ce) and LaFePO Studied by Muon Spin Relaxation: Unusual Similarities with the Behaviour of Cuprate Superconductors

JP et al Carlo, NSP Shannon

Research output: Contribution to journalArticle (Academic Journal)peer-review

58 Citations (Scopus)

Abstract

Muon spin relaxation measurements in iron-oxypnictide systems have revealed: (1) commensurate long-range order in undoped LaFeAsO; (2) a Bessel function line shape in LaFeAs(O0.97F0.03) which indicates possible incommensurate or stripe magnetism; (3) anomalous weak magnetism existing in superconducting LaFePO, CeFeAs(O0.084F0.16), and NdFeAs(O0.88F0.12) but absent in superconducting LaFeAs(O0.92F0.08); and (4) scaling of the superfluid density with Tc in the Ce-, La-, and Nd-FeAs superconductors following a nearly linear relationship found in cuprates.
Translated title of the contributionStatic Magnetic Order and Superfluid Density of RFeAsO; (R = La, Nd, Ce) and LaFePO Studied by Muon Spin Relaxation: Unusual Similarities with the Behaviour of Cuprate Superconductors
Original languageEnglish
Pages (from-to)087001-1 - 087001-4
Number of pages4
JournalPhysical Review Letters
Volume102
DOIs
Publication statusPublished - Feb 2009

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