Electronic and magnetic phase diagram of superconductors, SmFeAsO1−xFx

2009/04/30 by Yoichi Kamihara, Takatoshi Nomura, Masahiro Hirano +9 · 84 citations
Business, Management and Accounting · Materials Science · Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Corporate Taxation and Avoidance #Iron-based superconductors research #Magnetic field #Magnetic moment #Magnetization #Nuclear physics #Phase (matter) #Phase diagram #Physics #Spectral line #Superconductivity #Synchrotron #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1088/1367-2630/12/3/033005

published in New Journal of Physics 12(3), 033005 (IOP Publishing) · Accepted in New Journal of Physics

arxiv created 2010/01/31 · openalex publication_date 2010/03/05 · arxiv updated 2010/03/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

A crystallographic and magnetic phase diagram of SmFeAsO 1− x F x is determined as a function of x in terms of temperature based on electrical transport and magnetization, synchrotron powder x-ray diffraction, 57 Fe Mössbauer spectra (MS), and 149 Sm nuclear resonant forward scattering (NRFS) measurements. MS revealed that the magnetic moments of Fe were aligned antiferromagnetically at ∼144 K ( T N (Fe)). The magnetic moment of Fe (M Fe ) is estimated to be 0.34 μ B /Fe at 4.2 K for undoped SmFeAsO; M Fe is quenched in superconducting F-doped SmFeAsO. 149 Sm NRFS spectra revealed that the magnetic moments of Sm start to order antiferromagnetically at 5.6 K (undoped) and 4.4 K ( T N (Sm)) ( x =0.069). Results clearly indicate that the antiferromagnetic (AF) Sm sublattice coexists with the superconducting phase in SmFeAsO 1− x F x below T N (Sm), while the AF Fe sublattice does not coexist with the superconducting phase.

Citations

• Angle-resolved photoemission studies of the cuprate superconductors
• Ferromagnetic spin fluctuation inLaFeAsO1−xFx
• Normal-state transport properties of PrFeAsO1−xFy superconductor
• Crystal Structure and Antiferromagnetic Order inNdFeAsO1−xFx(x=0.0and 0.2) Superconducting Compounds from Neutron Diffraction Measurements
• Lattice and magnetic structures of PrFeAsO,PrFeAsO0.85F0.15, andPrFeAsO0.85
• Crystallographic phase transition and high-Tcsuperconductivity in LaFeAsO:F
• Specific heat of the iron-based high-TcsuperconductorSmO1−xFxFeAs
• Crystal structure and phase transitions across the metal-superconductor boundary in theSmFeAsO1−xFx(0≤x≤0.20)family
• The effect of internal pressure on the tetragonal to monoclinic structural phase transition in ReOFeAs: the case of NdOFeAs
• The electronic phase diagram of the LaO1−xFxFeAs superconductor
• Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO1-y (Ln = La, Nd)
• Superconductivity at 53.5 K in GdFeAsO1−δ
• Superconductivity at 52 K in iron based F doped layered quaternary compound Pr[O1–xFx]FeAs
• Magnetic ordering and negative thermal expansion in PrFeAsO
• Lattice study of light scalar tetraquarks

Cited by

• Exploration of new superconductors and functional materials, and fabrication of superconducting tapes and wires of iron pnictides
• Magnetism of PrFeAsO parent compound for iron-based superconductors: Mössbauer spectroscopy study