Transport properties and superconductivity in $B{a}_{1-x}{M}_{x}F{e}_{2}A{s}_2$ (M=La and K) with double FeAs layers

Abstract

We synthesized the samples $B{a}_{1-x}{M}_{x}F{e}_{2}A{s}_2$ (M=La and K) with $ThC{r}_{2}S{i}_2$-type structure. These samples were systematically characterized by resistivity, thermoelectic power (TEP) and Hall coefficient ($R_H$). $BaF{e}_{2}A{s}_2$ shows an anomaly in resistivity at about 140 K. Substitution of La for Ba leads to a shift of the anomaly to low temperature, but no superconducting transition is observed. Potassium doping leads to suppression of the anomaly in resistivity and induces superconductivity at 38 K as reported by Rotter et al.\cite{rotter}. The Hall coefficient and TEP measurements indicate that the TEP is negative for $BaF{e}_{2}A{s}_2$ and La-doped $BaF{e}_{2}A{s}_2$, indicating n-type carrier; while potassium doping leads to change of the sign in $R_H$ and TEP. It definitely indicates p-type carrier in superconducting $B{a}_{1-x}{K}_{x}F{e}_{2}A{s}_2$ with double FeAs layers, being in contrast to the case of $Ln{O}_{1-x}{F}_{x}FeAs$ with single FeAs layer. A similar superconductivity is also observed in the sample with nominal composition $B{a}_{1-x}{K}_{x}OF{e}_{2}A{s}_2$.

arXiv comment4 pages, 4 figures

References in corpus (8)

• 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
• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs
• Superconductivity and Phase Diagram in the Iron-based Arsenic-oxides ReFeAsO1-delta (Re = rare earth metal) without F-Doping
• Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
• Superconductivity at 25 K in hole doped $(L{a}_{1-x}S{r}_x)OFeAs$
• Superconductivity at 52 K in iron-based F-doped layered quaternary compound Pr[O1-xFx]FeAs

Cited by in corpus (36)

• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• Funtional Renormalization Group Study of the Pairing Symmetry and Pairing Mechanism of the FeAs Based High Temperature Superconductors
• A Numerical Renormalization Group Study of the Superconducting and Spin Density Wave Instabilities in MFeAsO${}_{1-x}$F${}_x$ Compounds
• Exploration of new superconductors and functional materials and fabrication of superconducting tapes and wires of iron pnictides
• Superconductivity induced by Ni doping in BaFe${}_2$As${}_2$
• Anisotropy in the electrical resistivity and susceptibility of superconducting BaFe${}_2$As${}_2$ single crystals
• Spin Gap and Resonance at the Nesting Wavevector in Superconducting FeSe0.4Te0.6
• Transport and anisotropy in single-crystalline SrFe${}_2$As${}_2$ and $A_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$ ($A$ = Sr, Ba) superconductors
• Antiferromagnetically Driven Electronic Correlation in Iron Pnictides and Cuprates
• Metamagnetic transition in EuFe${}_2$As${}_2$ single crystals
• Possible superconductivity above 25 K in single crystalline Co-doped BaFe${}_2$As${}_2$
• Superconductivity of powder-in-tube Sr0.6K0.4Fe2As2 wires
• Evolution of bulk superconductivity in SrFe2As2 with Ni substitution
• The phase diagrams of iron-based superconductors: theory and experiments
• Fermi Surface and Band Renormalization in (Sr,K)Fe${}_2$As${}_2$ Superconductor from Angle-Resolved Photoemission Spectroscopy
• Calorimetric Evidence of Strong-Coupling Multiband Superconductivity in Fe(Te0.57Se0.43) Single Crystal
• Identical effects of indirect and direct electron doping of superconducting BaFe2As2 thin films
• Suppression of the structural phase transition and lattice softening in slightly underdoped Ba(1-x)K(x)Fe2As2 with electronic phase separation
• Sr${}_2$VO${}_3$FeAs: A Nanolayered Bimetallic Iron Pnictide Superconductor
• Thermodynamic properties of Ba1-xMxFe2As2 (M = La and K)
• Pressure and chemical substitution effects in the local atomic structure of BaFe2As2
• Electronic and lattice dynamical properties of the iron-based superconductors LiFeAs and NaFeAs
• High-resolution angle-resolved photoemission spectroscopy study of the electronic structure of EuFe2As2
• High Pressure Synthesis of Indirectly electron-doped 122 Iron Superconductor Sr1-xLaxFe2As2 with a maximum Tc = 22 K
• Iron pnictides: Single crystal growth and effect of doping on structural, transport and magnetic properties
• Structure and Physical properties of New layered oxypnictides $S{r}_{4}S{c}_2{O}_6{M}_{2}A{s}_2$ (M=Fe and Co)
• Transport properties and anisotropy in rare earth doped CaFe2As2 single crystals with Tc above 40 K
• Theory of High-Tc Superconductivity: Accurate Predictions of Tc
• Theory of High-Tc Superconductivity: Transition Temperature
• Doping Dependence of Superconductivity and Lattice Constants in Hole Doped $L{a}_{1-x}S{r}_{x}FeAsO$
• Magnetic and structural transitions in La${}_{0.4}$Na${}_{0.6}$Fe${}_2$As${}_2$ single crystals
• Spin dynamics in electron-doped pnictide superconductors
• Antiferromagnetic order in Ca${}_{10}$(Pt${}_3$As${}_8$)(Fe${}_2$As${}_2$)${}_5$ observed by ${}^{75}$As NMR
• Nano-scale Inhomogeneous Superconductivity in Fe(Te1-xSex) Probed by Nanostructure-transport
• Temperature-composition Phase Diagrams for Ba1-xSrxFe2As2 and Ba0.5Sr0.5(Fe1-yCoy)2As2
• A Unified Theory for the Cuprates, Iron-Based and Similar Superconducting Systems: Application for Spin and Charge Excitations in the Hole-Doped Cuprates