Site-Selective Antimony Doping in Arsenic Zigzag Chains of 112-type Ca1-xLaxFeAs2

Abstract

Single crystal X-ray diffraction studies were performed for the Sb-doped 112-type iron-based superconductor Ca1-xLaxFeAs2 with the superconducting transition temperature Tc of 47 K. Doped Sb preferably substituted not for As(1) in the FeAs layers but for As(2) in the layers of As zigzag chains. Structural reasons for Tc enhancement by Sb doping were discussed.

3 pages, 1 figure, 2 tables

References in corpus (11)

• Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO1-y (Ln=La,Nd)
• Exploration of new superconductors and functional materials and fabrication of superconducting tapes and wires of iron pnictides
• Hydrogen in layered iron arsenide: indirect electron doping to induce superconductivity
• Superconductivity in Co-doped SmFeAsO
• Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2As2
• CaFeAs${}_2$: a Staggered Intercalation of Quantum Spin Hall and High Temperature Superconductivity
• Superconducting Transition Temperatures of up to 47 K from Simultaneous Rare-Earth Element and Antimony Doping of 112-Type CaFeAs2
• Synthesis and physical properties of Ca1-xRExFeAs2 with RE = La ~ Gd
• Enhancement in superconducting transition temperature and upper critical field of LaO0.8F0.2FeAs with antimony doping
• Observation of the anisotropic Dirac cone in the band dispersion of 112-structured iron-based superconductor Ca0.9La0.1FeAs2
• Structural and superconducting properties in LaFeAs1-xSbxO1-yFy

Cited by in corpus (2)

• Pressure-Induced Superconductivity from Doping-Induced Antiferromagnetic Phase of 112-type Ca${}_{1-x}$La${}_x$FeAs${}_2$
• The calcium doping effects on the structural and electrical properties of NdFeAsO0.8F0.2