Crystal growth and the electronic phase diagram of the 4$d$ doped Na${}_{1-\delta }$Fe${}_{1-x}$Rh${}_x$As in comparison with 3$d$ doped Na${}_{1-\delta }$Fe${}_{1-x}$Co${}_x$As

Abstract

Single crystals of Na${}_{1-\delta }$Fe${}_{1-x}$T${}_x$As with T = Co, Rh have been grown using a self-flux technique. The crystals were thoroughly characterized by powder X-ray diffraction, magnetic susceptibility and electronic transport with particular focus on the Rh-doped samples. Measurements of the specific heat and ARPES were conducted exemplarily for the optimally doped compositions. The spin-density wave transition (SDW) observed for samples with low Rh concentration ($0\le x\le 0.013$) is fully suppressed in the optimally doped sample. The superconducting transition temperature ($T_c$) is enhanced from $10$~K in Na${}_{1-\delta }$FeAs to $21$~K in the optimally doped sample ($x$ = 0.019) of the Na${}_{1-\delta }$Fe${}_{1-x}$Rh${}_x$As series and decreases for the overdoped compounds, revealing a typical shape for the superconducting part of the electronic phase diagram. Remarkably, the phase diagram is almost identical to that of Co-doped Na${}_{1-\delta }$FeAs, suggesting a generic phase diagram for both dopants.

9 pages, 12 figures

References in corpus (17)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Spin density wave anomaly at 140 K in the ternary iron arsenide BaFe2As2
• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• Determination of the phase diagram of the electron doped superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• The electronic phase diagram of the LaO1-xFxFeAs superconductor
• Superconductivity in Co-doped LaFeAsO
• Commensurate Spin Density Wave in LaOFeAs: A Local Probe Study
• Structure, antiferromagnetism and superconductivity of the layered iron arsenide NaFeAs
• Structural transition and anisotropic properties of single crystalline SrFe2As2
• Universal linear-temperature dependence of static magnetic susceptibility in iron-pnictides
• Phase Diagram and Calorimetric Properties of NaFe${}_{1-x}$Co${}_x$As
• Non-analytic spin susceptibility of a nested Fermi liquid: the case of Fe-based pnictides
• Linear-Temperature Dependence of Static Magnetic Susceptibility in LaFeAsO from Dynamical Mean-Field Theory
• A weak-coupling superconductivity in the electron doped NaFe${}_{0.95}$Co${}_{0.05}$As is revealed by ARPES
• Microscopic origin of the linear temperature increase of the magnetic susceptibility of BaFe${}_2$As${}_2$
• Combined effects of transition metal (Ni and Rh) substitution and annealing/quenching on physical properties of CaFe${}_2$As${}_2$

Cited by in corpus (2)

• The three-dimensional electronic structure of the nematic and antiferromagnetic phases of NaFeAs from detwinned ARPES measurements
• Electronic structure and ultrafast dynamics of FeAs-based superconductors by angle- and time-resolved photoemission spectroscopy