The Synthesis and Characterization of LiFeAs and NaFeAs

Abstract

The newest homologous series of superconducting As-pnictides, LiFeAs (Li111) and NaFeAs (Na111) have been synthesized and investigated. Both crystallize with the layered tetragonal anti-PbFCl-type structure in P4/nmm space group. Polycrystalline samples and single-crystals of Li111 and Na111 display superconducting transitions at ~ 18 K and 12-25 K, respectively. No magnetic order has been found in either compound, although a weak magnetic background is clearly in evidence. The origin of the carriers and the stoichiometric compositions of Li111 and Na111 were explored.

submitted for publication in Physica C special issue on Fe-pnictides

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Cited by in corpus (55)

• Superconductivity in Iron Compounds
• Magnetism and its microscopic origin in iron-based high-temperature superconductors
• Superconductivity without magnetism in LiFeAs
• Magnetism in Fe-based superconductors
• Tight-binding models for the new iron based superconductor materials
• Visualization of Electron Nematicity and Unidirectional Antiferroic Fluctuations at High Temperatures in NaFeAs
• Anisotropic Energy Gaps of Iron-based Superconductivity from Intra-band Quasiparticle Interference in LiFeAs
• Control via electron count of the competition between magnetism and superconductivity in cobalt and nickel doped NaFeAs
• Interplay between magnetism and superconductivity in iron-chalcogenide superconductors: crystal growth and characterizations
• Pauli-limiting effects in the upper critical fields of a clean LiFeAs single crystal
• Anisotropic upper critical field and a possible Fulde-Ferrel-Larkin-Ovchinnikov state in a stoichiometric pnictide superconductor LiFeAs
• Spin fluctuations in LiFeAs observed by neutron scattering
• The superconducting gaps in LiFeAs: Joint study of specific heat and ARPES
• Theory for Magnetism and Triplet Superconductivity in LiFeAs
• Synthesis, anisotropy, and superconducting properties of LiFeAs single crystal
• Superconductivity from repulsion in LiFeAs: novel s-wave symmetry and potential time-reversal symmetry breaking
• Magnetic fluctuations and superconducting properties of CaKFe4As4 studied by 75As NMR
• Distinguishing $s^{\pm }$ and $s^{++}$ electron pairing symmetries by neutron spin resonance in superconducting NaFe${}_{0.935}$Co${}_{0.045}$As
• The effect of As-Chain layers in CaFeAs${}_2$
• Spin-Fluctuation-Induced Non-Fermi-Liquid Behavior with suppressed superconductivity in LiFe${}_{1-x}$Co${}_x$As
• Optical conductivity of iron-based superconductors
• In-plane spin excitation anisotropy in the paramagnetic phase of NaFeAs
• Isotropic three-dimensional gap in the iron-arsenide superconductor LiFeAs from directional heat transport measurements
• Thermoelectric properties of iron-based superconductors and parent compounds
• Uniaxial pressure effect on structural and magnetic phase transitions in NaFeAs and its comparison with as-grown and annealed BaFe${}_2$As${}_2$
• Effect of Li-deficiency impurities on the electron-overdoped LiFeAs superconductor
• Antiferromagnetic spin excitations in single crystals of nonsuperconducting Li1-xFeAs
• Spin-phonon coupling and pressure effect in the superconductor LiFeAs : Lattice dynamics from first-principles calculations
• Anisotropic neutron spin resonance in underdoped superconducting NaFe1-xCoxAs
• Incommensurate magnetic fluctuations and Fermi surface topology in LiFeAs
• Nematic state in CeAuSb${}_2$
• Structural and electronic properties of new "122" pnictogen-free superconductor SrPd2Ge2 as compared with SrNi2Ge2 and SrNi2As2: first principles calculations
• A weak-coupling superconductivity in the electron doped NaFe${}_{0.95}$Co${}_{0.05}$As is revealed by ARPES
• Statistics of subgap states in $s_{\pm }$ superconductors
• Raman Scattering Study of the Lattice Dynamics of Superconducting LiFeAs
• Electron doping evolution of the magnetic excitations in NaFe${}_{1-x}$Co${}_x$As
• Doping - dependent anisotropic superconducting gap in Na${}_{1-\delta }$(Fe${}_{1-x}$Co${}_x$)As
• Short range magnetic order and effective suppression of superconductivity by manganese-doping in LaFe1-xMnxAsO1-yFy
• Hund's metal crossover and superconductivity in the 111 family of iron-based superconductors
• Incommensurate spin-density wave and multiband superconductivity in Na${}_x$FeAs as revealed by nuclear magnetic resonance
• Small and nearly isotropic hole-like Fermi surfaces in LiFeAs detected through de Haas van Alphen-effect
• High-pressure study of superconducting and non-superconducting single crystals of the same nominal composition Rb0.8Fe2Se2
• Pair-Hopping Mechanism for Layered Superconductors
• Coexistence of Clean- and Dirty-limit Superconductivity in LiFeAs
• Superconductivity enhanced by pair fluctuations between wide and narrow bands
• Structural study on hole-doped superconductors Pr1-xSrxFeAsO
• Magnetic neutron scattering studies on the Fe-based superconductor system Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• CuFeAs: A New Member in the 111-Family of Iron-Pnictides
• Pressure-Driven Quantum Criticality in An Iron-Selenide Superconductor
• Superconductivity-induced Phonon Renormalization on NaFe${}_{1-x}$Co${}_x$As
• Effect of impurity substitution on band structure and mass renormalization of the correlated FeTe${}_{0.5}$Se${}_{0.5}$ superconductor
• Contrast of LiFeAs with isostructural, isoelectronic, and non-superconducting MgFeGe
• Effect of the iron valence in the two types of layers in LiFeO${}_2$Fe${}_2$Se${}_2$
• High-pressure self-flux growth and characterization of Li-deficient Li0.95FeAs single crystals
• Absence of nematic instability in LiFeAs