Thorium-doping–induced superconductivity up to 56 K in Gd 1−x Th x FeAsO

2008/04/30 by Cao Wang, Linjun Li, Shun Chi +12 · 17 citations
Business, Management and Accounting · Materials Science · Physics and Astronomy · #Corporate Taxation and Avoidance #Iron-based superconductors research #cond-mat.supr-con

paper · pdf · doi:10.1209/0295-5075/83/67006

published as Europhysics Letters 83, 67006 (2008). · 4 pages, 3 figures

arxiv created 2008/06/12 · openalex publication_date 2008/09/01 · arxiv updated 2009/12/01 · openalex created_date 2017/03/16 · openalex updated_date 2026/07/30

Abstract

We report a new strategy to induce superconductivity in iron-based oxyarsenide. Instead of F - substitution for O 2- , we employed Th 4+ doping in GdFeAsO with the consideration of "lattice match" between Gd 2 O 2 layers and Fe 2 As 2 ones. As a result, superconductivity with T c onset as high as 56 K was realized in a Gd 0.8 Th 0.2 FeAsO polycrystalline sample. This T c value is among the highest ever discovered in the iron-based oxypnictides.

Citations

• Superconductivity at 53.5 K in GdFeAsO1−δ

Cited by

• Neutron scattering investigation of the magnetic order in single crystalline BaFe2As2
• Superconducting State inSrFe2−xCoxAs2by Internal Doping of the Iron Arsenide Layers
• Superconductivity up to 30 K in the vicinity of the quantum critical point in BaFe2(As1−xPx)2
• Crystal Structure and Antiferromagnetic Order inNdFeAsO1−xFx(x=0.0and 0.2) Superconducting Compounds from Neutron Diffraction Measurements
• SrFeAsF as a parent compound for iron pnictide superconductors
• Superconductivity at 15.6 K in calcium-doped Tb 1-x Ca x FeAsO: The structure requirement for achieving superconductivity in the hole-doped 1111 phase
• Upper critical fields well above 100 T for the superconductorSmFeAsO0.85F0.15withTc=46 K
• Crystallographic phase transition and high-Tcsuperconductivity in LaFeAsO:F
• Narrow superconducting window inLaFe1−xNixAsO
• Upper critical field, superconducting energy gaps and the Seebeck coefficient in La0.8Th0.2FeAsO
• Density functional study of the overdoped iron chalcogenideTlFe2Se2withThCr2Si2structure
• MULTIPLE SUPERCONDUCTING GAPS, ANISOTROPIC SPIN FLUCTUATIONS AND SPIN-ORBIT COUPLING IN IRON-PNICTIDES
• A predictive bond order model connects covalent superconductivity, including cuprates, oxypnictides or HfN based materials
• High Critical Current Density 4 MA/cm2in Co-Doped BaFe2As2Epitaxial Films Grown on (La,Sr)(Al,Ta)O3Substrates without Buffer Layers
• Transport properties and superconductivity in Ba 1-x M x Fe 2 As 2 (M=La and K) with double FeAs layers
• Unconventional superconductivity originating from disconnected Fermi surfaces in the iron-based compound
• A New ZrCuSiAs-Type Superconductor: ThFeAsN