Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs

Abstract

A new hight Tc Fe-based compound system, AFe2As2 with A = K, Cs, K/Sr and Cs/Sr has been found. Through electron-doping, Tc of the A = K and Cs compounds rises to ~37 K, and finally enter a spin-density-wave state (SDW) through further electron doping with Sr. The observation demonstrates the crucial role of the (FeAs)-layers in the superconductivity in the Fe-based layered system and the special feature of elemental A-layers in this complex chemical system may provide new avenues to superconductivity at a higher Tc.

arXiv commentminor corrections, references completed, figures revised

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Cited by in corpus (336)

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• Pressure-induced superconductivity in Eu${}_{0.5}$Ca${}_{0.5}$Fe${}_2$As${}_2$ : FeAs-based superconductivity hidden by antiferromagnetism of Eu sublattice
• Antiphase magnetic boundaries in iron-based superconductors: A first-principle density-functional theory study
• Uniform chemical pressure effect in solid solutions Ba(1-x)Sr(x)Fe2As2 and Sr(1-x)Ca(x)Fe2As2
• Effects of Pressure on the Electronic and Structural Properties of LaOFeAs
• Optical and photoemission investigation of structural and magnetic transitions in the iron-based superconductor Sr${}_{0.67}$Na${}_{0.33}$Fe${}_2$As${}_2$
• Role of Sn impurity on electronic topological transitions in 122 Fe-based superconductors
• Normal-state electrical resistivity and superconducting magnetic penetration depth in Eu0.5K0.5Fe2As2
• Superconductivity at 15.6 K in Calcium-doped Tb_{1-x}Ca_xFeAsO: the structure requirement for achieving superconductivity in the hole-doped 1111 phase
• Pressure-Driven Quantum Criticality in An Iron-Selenide Superconductor
• Unscreening Effect on Fe-Pnictide Superconductor
• The role of correlations in the high-pressure phase of FeSe
• Single crystal growth and superconductivity of Ca(Fe1-xCox)2As2
• Doping Dependence of Correlation Effects in K{1-x}Fe{2-y}Se2 Superconductor: LDA'+DMFT Investigation
• Superconductivity in Ti-doped Iron-Arsenide Compound Sr4Cr0.8Ti1.2O6Fe2As2
• Origin of pressure induced second superconducting dome in AyFe2-xSe2 [A=K, (Tl,Rb)]
• Vibrational anomalies in AFe${}_2$As${}_2$ (A$=$Ca, Sr, and Ba) single crystals
• Magnetic and electrical properties and carrier doping effects on the Fe-based host compound Sr4Sc2Fe2As2O6
• Josephson effect and Andreev reflection in Ba(1-x)NaxFe2As2 (x=0.25 and 0.35) point contacts
• Novel polymorphic phase of BaCu2As2: impact of flux for new phase formation in crystal growth
• Magnetic Properties of RFe2Si2 and R(Fe1-xMx)2Si2 Systems (R=La, Y and Lu, M= Ni, Mn and Cu)
• New Superconducting RbFe2As2: A First-principles Investigation
• Anisotropic optical properties of detwinned BaFe${}_2$As${}_2$
• Data analysis of $ab$ $initio$ effective Hamiltonians in iron-based superconductors $\unicode{x2014}$ Construction of predictors for superconducting critical temperature
• Accurate determination of the Fermi surface of tetragonal FeS via quantum oscillation measurements and quasiparticle self-consistent \textit{GW} calculations
• Drastic electronic structure reconstruction of Ca${}_{1-x}$Pr${}_x$Fe${}_2$As${}_2$ in the collapsed tetragonal phase
• Temperature-dependent structure of an intermetallic ErPd${}_2$Si${}_2$ single crystal: A combined synchrotron and in-house X-ray diffraction study
• Type II superconductivity in SrPd2Ge2
• Pressure suppression of spin-density-wave gap in the optical conductivity of SrFe2As2
• Pressure-driven phase transitions in correlated systems
• Magnetic disorder and gap symmetry in optimally electron doped Sr(Fe, Co)${}_2$As${}_2$ superconductor
• Representation-protected topology of spin-singlet $s$-wave superconductors
• A neutron scattering study of the under-doped Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$, x=0.09 and 0.17 self-flux grown single crystals and the universality of the tricritical point
• Optimization of a Non-arsenic Iron-based Superconductor for Wire Fabrication
• Evolution of Critical Current Density in CaKFe${}_4$As${}_4$ with La-doping
• Huge magnetostriction in superconducting single-crystalline BaFe${}_{1.908}$Ni${}_{0.092}$As${}_2$
• A first principles study on FeAs single layers
• In-plane electronic anisotropy revealed by interlayer resistivity measurements on the iron-based superconductor parent compound CaFeAsF
• Anomalous High-Field Magnetotransport in CaFeAsF due to the Quantum Hall Effect
• Electronic Transport and Fermi Surface Topology of Zintl Phase Compound SrZn2Ge2
• Hole doping and electronic correlations in Cr-substituted BaFe${}_2$As${}_2$
• Praseodymium doping effect on the superconducting properties of FeSe${}_{0.5}$Te${}_{0.5}$ bulks under ambient and high-pressure growth conditions
• Phase transition in CaFeAsH: bridging 1111 and 122 iron-based superconductors
• Superconductivity in CuIr2-xAlxTe4 telluride chalcogenides
• Suppression of antiferromagnetic order and strong ferromagnetic spin fluctuations in Ni-doped CaCo2As2 single crystals
• Experimental and theoretical electronic structure of EuRh2As2
• A Unified Theory for the Cuprates, Iron-Based and Similar Superconducting Systems: Application for Spin and Charge Excitations in the Hole-Doped Cuprates
• Superconductivity in layered iron Selenide induced by cobalt- and sodium-doping
• Effect of Co doping and hydrostatic pressure on SrFe2As2
• Evidences for local non-centrosymmetricity and strong phonon anomaly in EuCu2As2: A Raman spectroscopy and lattice dynamics study
• Anomalous enhancement of magnetism by nonmagnetic doping in the honeycomb-lattice antiferromagnet ErOCl
• Pressure Induced Superconductivity and Structural Transitions in Ba(Fe0.9Ru0.1)2As2
• Antiferromagnetic structure and magnetic properties of Dy2O2Te: An isostructural analog of the rare-earth superconductors R2O2Bi
• Emergence of ferromagnetism due to Ir substitutions in single-crystalline Ba[Co(1 x)Ir(x)]2As2
• Novel 122-type Ir-based superconductors BaIr2Mi2 (Mi = P and As): A density functional study