Isoelectronic Ru substitution at the iron site in SmFe1−xRuxAsO0.85F0.15 and its effects on structural, superconducting, and normal-state properties
M. Tropeano, M. R. Cimberle, C. Ferdeghini, G. Lamura, A. Martinelli, A. Palenzona, I. Pallecchi, A. Sala, I. Sheikin, F. Bernardini, M. Monni, S. Massidda, M. Putti
DOI 10.1103/PhysRevB.81.184504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
In this work we present a systematic experimental and theoretical study of the structural, transport, and superconducting properties of Sm(Fe1−xRux)As(O0.85F0.15) polycrystalline samples as a function of Ru content (x) ranging from 0 to 1. The choice of Ru as isoelectronic substitution at Fe site of F-doped compounds allows to better clarify the role of structural disorder in modifying the normal and superconducting properties of these recently discovered multiband superconductors. Two different regions are identified: the Fe-rich phase (x<0.5) where superconducting and normal-state properties are strongly affected by disorder induced by Ru substitution; the Ru-rich phase (x>0.5) where the system is metallic and strongly compensated and the presence of Ru frustrates the magnetic moment on Fe ions. Here the lack of magnetic features and related spin fluctuations may be the cause for the suppression of superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sm(Fe1-xRux)As(O0.85F0.15) Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Correlated Trends of Coexisting Magnetism and Superconductivity in Optimally Electron-Doped Oxypnictides
similarity 0.93S. Sanna et al.
Source status unknown — claims are unverified
Effect of Ru substitution on atomic displacements in the layered SmFe1−xRuxAsO0.85F0.15 superconductor
similarity 0.92A. Iadecola et al.
Source status unknown — claims are unverified
Effect of Ru susbstitution on atomic displacements in the layered SmFe_{1-x}Ru_xAsO_{0.85}F_{0.15} superconductor
similarity 0.90A. Iadecola et al. · 2012 · arXiv:1206.6526
Source status unknown — claims are unverified
X-ray spectra and electronic structures of the iron arsenide superconductors RFeAsO1−xFx (R=La,Sm)
similarity 0.90E. Z. Kurmaev et al.
Source status unknown — claims are unverified
Effects of isoelectronic Ru substitution at the Fe site on the energy gaps of optimally F-doped SmFeAsO
similarity 0.90D. Daghero et al. · 2013 · arXiv:1301.3757
Source status unknown — claims are unverified
Magnetoelastically coupled structural, magnetic, and superconducting order parameters in BaFe2(As1−xPx)2
similarity 0.90H.-H. Kuo et al.
Source status unknown — claims are unverified