Crystal Structure and Superconductivity at about 30 K in $A$Ca$_2$Fe$_4$As$_4$F$_2$ ($A$ = Rb, Cs)

Zhi-Cheng Wang; Chao-Yang He; Zhang-Tu Tang; Si-Qi Wu; Guang-Han Cao

doi:10.1007/s40843-016-5150-x

paper

Crystal Structure and Superconductivity at about 30 K in $A$ Ca $_{2}$ Fe $_{4}$ As $_{4}$ F $_{2}$ ( $A$ = Rb, Cs)

arXiv:1704.01051 · doi:10.1007/s40843-016-5150-x

Abstract

We have synthesized two iron fluo-arsenides $A$ Ca $_{2}$ Fe $_{4}$ As $_{4}$ F $_{2}$ with $A$ = Rb and Cs, analogous to the newly discovered superconductor KCa $_{2}$ Fe $_{4}$ As $_{4}$ F $_{2}$ . The quinary inorganic compounds crystallize in a body-centered tetragonal lattice with space group I4/mmm, which contain double Fe $_{2}$ As $_{2}$ layers that are separated by insulating Ca $_{2}$ F $_{2}$ layers. Our electrical and magnetic measurements on the polycrystalline samples demonstrate that the new materials undergo superconducting transitions at Tc = 30.5 K and 28.2 K, respectively, without extrinsic doping. The correlations between Tc and structural parameters are discussed.

arXiv comment9 pages,4 figures, 1 table

References in corpus (23)

Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
Superconductivity at 43 K in Samarium-arsenide Oxides $S m F e A s O_{1 - x} F_{x}$
The Puzzle of High Temperature Superconductivity in Layered Iron Pnictides and Chalcogenides
The superconductivity at 18 K in LiFeAs system
Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO1-y (Ln=La,Nd)
Superconductivity at 25 K in hole doped $(L a_{1 - x} S r_{x}) O F e A s$
Anion height dependence of Tc for the Fe-based superconductor
Structure determination and coexistence of superconductivity and antiferromagnetic order in (Li0.8Fe0.2)OHFeSe
Superconductivity at 17 K in (Fe2P2)(Sr4Sc2O6): a new superconducting layered pnictide oxide with a thick perovskite oxide layer
Iron based high transition temperature superconductors
Superconductivity in quasi-one-dimensional K $_{2}$ Cr $_{3}$ As $_{3}$ with significant electron correlations
Unconventional superconductivity in quasi-one-dimensional Rb $_{2}$ Cr $_{3}$ As $_{3}$
Superconductivity in quasi-one-dimensional Cs2Cr3As3 with large interchain distance
Superconductivity in Ca1-xLaxFeAs2: A Novel 112-Type Iron Pnictide with Arsenic Zigzag Bonds
Electron doped Ca10(Pt3As8)(Fe2As2)5 and Ca10(Pt4As8)(Fe2As2)5 - High Tc superconductors with skutterudite intermediary layers
Superconductivity in KCa $_{2}$ Fe $_{4}$ As $_{4}$ F $_{2}$ with Separate Double Fe $_{2}$ As $_{2}$ Layers
(Sr_3Sc_2O_5)Fe_2As_2 as a possible parent compound for FeAs-based superconductors
Superconductivity at 38 K in Iron-Based Compound with Platinum-Arsenide Layers Ca10(Pt4As8)(Fe2-xPtxAs2)5
Superconductivity and Ferromagnetism in Hole-Doped RbEuFe $_{4}$ As $_{4}$
A New Ferromagnetic Superconductor: CsEuFe $_{4}$ As $_{4}$
Crystal Chemistry and Structural Design of Iron-Based Superconductors
Bulk Superconductivity at 2.6 K in Undoped RbFe_2As_2

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Crystal Structure and Superconductivity at about 30 K in ACa2​Fe4​As4​F2​ (A = Rb, Cs)

Abstract

References in corpus (23)

Cited by in corpus (34)

Crystal Structure and Superconductivity at about 30 K in $A$ Ca $_{2}$ Fe $_{4}$ As $_{4}$ F $_{2}$ ( $A$ = Rb, Cs)