Superconductivity at 22 K in Co-doped BaFe2As2 Crystals

Abstract

Here we report bulk superconductivity in BaFe1.8Co0.2As2 single crystals below Tc = 22 K, as demonstrated by resistivity, magnetic susceptibility, and specific heat data. Hall data indicate that the dominant carriers are electrons, as expected from simple chemical reasoning. This is the first example of superconductivity induced by electron doping in this family of materials. In contrast to the cuprates, the BaFe2As2 system appears to tolerate considerable disorder in the FeAs planes. First principles calculations for BaFe1.8Co0.2As2 indicate the inter-band scattering due to Co is weak.

9 pages, 3 figures

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• 59Co and 75As NMR Investigation of the Lightly Doped Ba[Fe(1-x)Co(x)]2As2 (x =0.02, 0.04)
• Comprehensive Eliashberg analysis of microwave conductivity and penetration depth of K-, Co-, and P-substituted BaFe2As2
• Structural, Magnetic and Electronic Properties of the Iron-Chalcogenide A${}_x$Fe${}_{2-y}$Se${}_2$ (A=K, Cs, Rb, Tl and etc.) Superconductors
• Suppression of spin density wave by isoelectronic substitution in PrFe(1-x)Ru(x)AsO
• Magnetic structure of superconducting Eu(Fe0.82Co0.18)2As2 as revealed by single-crystal neutron diffraction
• Comparison of crystal structures and effects of Co substitution in a new member of Fe-1111 superconductor family AeFeAsF(Ae = Ca and Sr): a possible candidate for higher Tc superconductor
• Observation of a coherence peak and pair-breaking effects in THz conductivity of BaFe${}_{2-2x}$Co${}_{2x}$As${}_2$
• BaT2As2 Single Crystals (T = Fe, Co, Ni) and Superconductivity upon Co-doping
• Enhanced critical-current in P-doped BaFe2As2 thin films on metal substrates arising from poorly aligned grain boundaries
• Synthesis of high-entropy-alloy-type superconductors (Fe,Co,Ni,Rh,Ir)Zr2 with tunable transition temperature
• Structural properties and superconductivity of SrFe2As2-xPx and CaFe2As2-yPy
• Effective One-Dimensional Coupling in the Highly-Frustrated Square-Lattice Itinerant Magnet CaCo${}_{2-y}$As${}_2$
• Electronic and lattice dynamical properties of the iron-based superconductors LiFeAs and NaFeAs
• Magnetic properties of EuPtSi${}_3$ single crystals
• A brief review on muSR studies of unconventional Fe and Cr-based superconductors
• Crystal, magnetic, and electronic structures, and properties of new BaMnPnF (Pn = As, Sb, Bi)
• Fermi-Surface Reconstruction and Complex Phase Equilibria in CaFe${}_2$As${}_2$
• Phase diagram of superconductivity and antiferromagnetism in single crystals of Sr(Fe1-xCox)2As2 and Sr1-yEuy(Fe0.88Co0.12)2As2
• Principles of crystal growth of intermetallic and oxide compounds from molten solutions
• Absence of Superconductivity in the "hole-doped" Fe pnictide Ba(Fe${}_{1-x}$Mn${}_x$)${}_2$As${}_2$: Photoemission and X-ray Absorption Spectroscopy Studies
• Superconductivity induced by doping Platinum in BaFe2As2
• Novel weak-ferromagnetic metallic state in heavily doped Ba${}_{1-x}$K${}_x$Mn${}_2$As${}_2$
• Structural features and tetragonal-orthorhombic phase transition in SrFe2As2 and CaFe2As2
• Direct measurement of the magnetic penetration depth by magnetic force microscopy
• Crystallography and Physical Properties of BaCo2As2, Ba{0.94}K{0.06}Co2As2 and Ba{0.78}K{0.22}Co2As2
• Superfluid density measurements of Ba(CoxFe1-x)2As2 films near optimal doping
• Hubbard interactions in iron-based pnictides and chalcogenides: Slater parametrization, screening channels and frequency dependence
• Unconventional density waves and superconductivities in Fe-based superconductors and other strongly correlated electron systems
• Magnetism and Disorder Effects on muSR Measurements of the Magnetic Penetration Depth in Iron-Based Superconductors
• Phonon splitting and anomalous enhancement of infrared-active modes in BaFe${}_2$As${}_2$
• Electronic structure of CaFe2As2: Contribution of itinerant Fe 3d-states to the Fermi Level
• Vortex images on Ba{1-x}KxFe2As2 observed directly by the magnetic force microscopy
• Disorder effects on the superconducting properties of BaFe${}_{1.8}$Co${}_{0.2}$As${}_2$ single crystals
• High Pressure Synthesis of Indirectly electron-doped 122 Iron Superconductor Sr1-xLaxFe2As2 with a maximum Tc = 22 K
• Effective carrier type and field-dependence of the reduced-Tc superconducting state in SrFe(2-x)Ni(x)As2
• Bulk electronic structure of optimally doped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Incommensurate antiferromagnetic fluctuations in single-crystalline LiFeAs studied by inelastic neutron scattering
• Multi-gap superconductivity in a BaFe1.84Co0.16As2 film from optical measurements at terahertz frequencies
• Charge doping versus disorder in CeFeAsO: do the in- and out-of-plane dilutions play the same role?
• Universality of dispersive spin-resonance mode in superconducting BaFe2As2
• On infrared pseudogap in cuprate and pnictide high-temperature superconductors
• Point-contact spectroscopic studies on normal and superconducting AFe_2As_2-type iron-pnictide single crystals
• Microscopic Study of the Superconducting State of the Iron Pnictide RbFe_2As_2
• Electronic phase diagram of disordered Co doped BaFe2As2
• Formation of Collapsed Tetragonal Phase in EuCo2As2 under High Pressure
• Fermi-Suface Evolution by Transition-metal Substitution in the Iron-based Superconductor LaFeAsO
• Anomalous metallic state and anisotropic multiband superconductivity in Nb3Pd0.7Se7
• Magnetic property and crystalline electric field effect in ThCr${}_2$Si${}_2$-type CeNi${}_2$As${}_2$
• A crossover in phase diagram of NaFe${}_{1-x}$Co${}_x$As determined by electronic transport measurements
• Electronic structure of single-crystalline Sr(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ probed by x-ray absorption spectroscopy: Evidence for isovalent substitution of Fe${}^{2+}$ by Co${}^{2+}$
• Charge dynamics of the spin-density-wave state in BaFe${}_2$As${}_2$
• Surface terminations and layer-resolved spectroscopy in 122 iron pnictide superconductors
• Strong Coupling of the Iron-Quadrupole and Anion-Dipole Polarizations in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Effect of Molybdenum 4d Hole Substitution in BaFe2As2
• Measurement of the $B_{1g}$ and $B_{2g}$ components of the elastoresistivity tensor for tetragonal materials via transverse resistivity configurations
• Different effects of Ni and Co substitution on the transport properties of BaFe2As2
• Enhanced upper critical field in Co-doped Ba122 superconductors by lattice defect tuning
• Heavy fermion and Kondo lattice behavior in the itinerant ferromagnet CeCrGe3
• Band-selective clean- and dirty-limit superconductivity with nodeless gaps in the bilayer iron-based superconductor CsCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Cooperative effects of Coulomb and electron-phonon interactions in the two-dimensional 16-band d-p model for iron-based superconductors
• Magnetic and lattice coupling in single-crystal SrFe${}_2$As${}_2$: A neutron scattering study
• Electronic structure and spin dynamics of ACo2As2 (A=Ba, Sr, Ca)
• Magnetic impurities in the two-band $s_{\pm }$-wave superconductors
• Competition/Coexisitence of Magnetism and Superconductivity in Iron Pnictides Probed by Muon Spin Rotation
• Co-co-doping effect for (Ca,RE)FeAs2 sintered bulk
• Magnetic and lattice coupling in single-crystal SrFe${}_2$As${}_2$: A neutron scattering study
• Strong coupling between Eu2+ spins and Fe2As2 layers in EuFe1.9Co0.1As2 observed with NMR
• Transport properties and anisotropy in rare earth doped CaFe2As2 single crystals with Tc above 40 K
• Angle-Resolved Photoemission Spectroscopy Study of BaCo2As2
• The anomaly Cu doping effects on LiFeAs superconductors
• Clear evidence against superconductivity in hydrides under high pressure
• Spin-density-wave-induced anomalies in the optical conductivity of AFe2As2, (A=Ca, Sr, Ba) single-crystalline iron pnictides
• Superconductivity and Dirac Fermions in 112-phase Pnictides
• Determination of Superconducting Gap of SmFeAsFxO1-x Superconductors by Andreev Reflection Spectroscopy
• Pressure effects on the transport coefficients of Ba(Fe1-xCox)2As2
• Optical properties of $A$Fe${}_2$As${}_2$ ($A=$Ca, Sr, and Ba) single crystals
• Microscopic Coexistence of Magnetism and Superconductivity in charge compensated Ba1-xKx(Fe1-yCoy)2As2
• Raman scattering as a probe of nematic correlations
• The evolution of antiferromagnetic susceptibility to uniaxial pressure in Ba(Fe{1-x}Co{x})2As2
• Cu substitution effects on the local magnetic properties of Ba(Fe_[1-x]Cu_[x])2As2: a site-selective 75-As and 63-Cu NMR study
• Spiral magnetic ordering of the Eu moments in EuNi${}_2$As${}_2$
• Critical Slowing Down of Quadrupole and Hexadecapole Orderings in Iron Pnictide Superconductor
• Coexistence of two superconducting phases in Ca1-xLaxFe2As2
• Use of Cernox thermometers in AC specific heat measurements under pressure
• Temperature and Pressure Dependence of the Fe-specific Phonon Density of States in Ba(Fe(1-x)Co(x))2As2
• Correlation-induced self-doping in intercalated iron-pnictide superconductor Ba2Ti2Fe2As4O
• Ba(Zn,Co)2As2: a II-II-V Diluted Ferromagnetic Semiconductor with N-type Carriers
• Unusual Phase Transitions and Magnetoelastic Coupling in TlFe1.6Se2 Single Crystals
• Orbital Symmetry of Ba(Fe1-xCox)2As2 Superconductors Probed with X-ray Absorption Spectroscopy
• Disorder effects and current percolation in FeAs based superconductors
• Microstructure and superconductivity of Ir-doped BaFe2As2 superconductor
• Superconductivity at 3.85 K in BaPd2As2 with the ThCr2Si2-type structure
• Anisotropic magnetism, resistivity, London penetration depth and magneto-optical imaging of superconducting K0.80Fe1.76Se2 single crystals
• Physical properties of EuPd2As2 single crystals
• Upper critical field anisotropy in BaFe2-xCoxAs2 single crystals synthesized without flux
• Structural and transport properties of Sr2VO{3-delta}FeAs superconductors with different oxygen deficiencies
• Critical Behavior of the SDW Transition in Underdoped Ba(Fe1-xCox)2As2 (x <=0.05): 75As NMR Investigation
• Properties of KCo${}_2$As${}_2$ and Alloys with Fe and Ru: Density Functional Calculations
• Magnetic scattering and electron pair breaking by rare-earth-ion substitution in BaFe2As2 epitaxial films
• Transport and magnetic properties of Co-doped BaFe_{2}As_{2} epitaxial thin films
• Antiphase Fermi-surface modulations accompanying displacement excitation in a parent compound of iron-based superconductors
• Evidence for a vortex-glass transition in superconducting Ba(Fe${}_{0.9}$Co${}_{0.1}$)${}_2$As${}_2$
• Unusual temperature evolution of superconductivity in LiFeAs
• Doping evolution of the superconducting gap structure in the underdoped iron arsenide Ba1-xKxFe2As2 revealed by thermal conductivity
• NMR measurements of intrinsic spin susceptibility in LaFeAsO(0.9)F(0.1)
• Heavily Hydride-ion-doped 1111-type Iron-based Superconductors: Synthesis, Physical Properties and Electronic Structure
• Spin anisotropy due to spin-orbit coupling in optimally hole-doped Ba${}_{0.67}$K${}_{0.33}$Fe${}_2$As${}_2$
• Interplay between Co-3d and Ce-4f magnetism in CeCoAsO
• Upper critical fields and critical current density of BaFe2(As0.68P0.32)2 single crystal
• Transport properties of 3D extended s-wave states in Fe-based superconductors
• HHG-laser-based time- and angle-resolved photoemission spectroscopy of quantum materials
• Disorder effects in multiorbital $s_{\pm }$-wave superconductors: Implications for Zn-doped BaFe${}_2$As${}_2$ compounds
• Electronic Structure, Magnetism and Superconductivity of Layered Iron Compounds
• Direct spectroscopic evidence for completely filled Cu $3d$ shell in BaCu${}_2$As${}_2$ and $\alpha$-BaCu${}_2$Sb${}_2$
• Diverse fluctuations and anisotropic Gr{\" u}neisen parameter behavior in iron-based superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ and their correlation with superconductivity
• NMR investigation of spin correlations in BaCo2As2
• Disorder effects in pnictides : a tunneling spectroscopy study
• Improving quantum-transition temperatures in BaFe2As2-based crystals by removing local-lattice strain & electronic-structure disorder
• Possible Superconductivity in Fe-Sb Based Materials: Density Functional Study of LiFeSb
• Magnetic fluctuations and superconductivity in Fe pnictides probed by electron spin resonance
• Transport and magnetic properties of La-doped CaFe${}_2$As${}_2$
• Superconductivity in Undoped Single Crystals of BaFe2As2: Field and Current Dependence
• Theory of tunnelling into a multi-band superconductor: decoherence and interference
• Doping-Dependent and Orbital-Dependent Band Renormalization in Ba(Fe_1-xCo_x)_2As_2 Superconductors
• Anisotropic thermal expansion of AEFe2As2 (AE = Ba, Sr, Ca) single crystals
• Magnetic Impurities in the Pnictide Superconductor Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Specific Heat To Hc2: Evidence for Nodes or Deep Minima in the Superconducting Gap of Under- and Overdoped Ba(Fe1-xCox)2As2
• Normal State Spin Dynamics of Five-band Model for Iron-pnictides
• Spin excitations in hole-overdoped iron-based superconductors
• Magnetic neutron diffraction study of Ba(Fe1-xCox)2As2 critical exponents through the tricritical doping
• Muon-spin rotation and magnetization studies of chemical and hydrostatic pressure effects in EuFe_{2}(As_{1-x}P_{x})_{2}
• Ambipolar suppression of superconductivity by ionic gating in optimally-doped BaFe2(As,P)2 ultrathin films
• Observation of Two Collapsed Phases in CaRbFe4As4
• Critical current density and magnetic phase diagram of BaFe1.29Ru0.71As2 Single Crystals
• The effect of Cr impurity to superconductivity in electron-doped BaFe2-xNixAs2
• Restoration of tetragonal $C_4$ symmetry coexistent with filamentary superconductivity in the pressure induced intermediate phase in the iron-based superconductor Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Electronic structures of doped BaFe${}_2$As${}_2$ materials: virtual crystal approximation versus super-cell approach
• Role of Magnetism in Superconductivity of BaFe2As2: Study of 5d Au-doped Crystals
• Pressure Induced Enhancement of Superconductivity in LaRu2P2
• Helical magnetic ordering in Sr(Co1-xNix)2As2
• Observation of a Phase Transition at 55 K in Single-Crystal CaCu1.7As2
• Spin excitation anisotropy in optimal-isovalent-doped superconductor BaFe2(As0.7P0.3)2
• Study of the second magnetization peak and the pinning behaviour in Ba(Fe${}_{0.935}$Co${}_{0.065}$)${}_2$As$_2
• Vortex Structure and Anisotropic Superconducting Gaps in Ba[Fe(Ni)]${}_2$As${}_2$
• Magnetism and superconductivity in Sr${}_2$VFeAsO${}_3$ revealed by ${}^{75}$As- and ${}^{51}$V-NMR under elevated pressures
• Thermoelectric power of Ba(Fe1-xRux)2As2 and Ba(Fe1-xCox)2As2: possible changes of Fermi surface with and without changes in electron count
• BaFe2As2 Surface Domains and Domain Walls: Mirroring the Bulk Spin Structure
• Spin dynamics in electron-doped pnictide superconductors
• Interband Quasiparticle Scattering in Superconducting LiFeAs Reconciles Photoemission and Tunneling Measurements
• Structural Analysis on Iron-Based Superconductor Pr1111 System with Oxygen Deficiency and Flourine Substitution
• Evidence for Coexistence of Superconductivity and Magnetism in Single Crystals of Co-doped SrFe${}_2$As${}_2$
• Robust antiferromagnetic spin waves across the metal-insulator transition in hole-doped BaMn${}_2$As${}_2$
• Effect of Ni-doping on magnetism and superconductivity in Eu0.5K0.5Fe2As2
• Suppression of magnetic order in CaCo${}_{1.86}$As${}_2$ with Fe substitution: Magnetization, neutron diffraction, and x-ray diffraction studies of Ca(Co${}_{1-x}$Fe${}_x$)${}_y$As${}_2$
• Doping evolution of antiferromagnetism and transport properties in the non-superconducting BaFe2-2xNixCrxAs2
• Raman scattering study of spin-density-wave-induced anisotropic electronic properties in AFe2As2 (A=Ca,Eu)
• Effect of surface morphology and magnetic impurities on the electronic structure in cobalt-doped BaFe2As2 superconductors
• Electron spin resonance in Eu based Fe pnictides
• Effects of Vanadium doping on BaFe2As2
• Annealing effects on superconductivity in SrFe2-xNixAs2
• NMR study of electronic correlations in Mn-doped Ba(Fe1-xCox)2As2 and BaFe(As1-xPx)2
• BaFe2(As1-xPx)2 (x = 0.22-0.42) thin films grown on practical metal-tape substrates and their critical current densities
• Superconductivity by rare earth doping in the 1038-type compounds (Ca${}_{1-x}$RE${}_x$)${}_{10}$(FeAs)${}_{10}$(Pt${}_3$As${}_8$) with RE = Y, La-Nd, Sm-Lu
• Optical properties of the iron-chalcogenide superconductor FeTe0.55Se0.45
• Effect of the isoelectronic substitution of Sb for As on the magnetic and structural properties of LaFe(As1-xSbx)O
• Distinct behaviors of suppression to superconductivity in $LaR{u}_{3}S{i}_2$ induced by Fe and Co dopants
• Electronic structure of BaNi${}_2$P${}_2$ observed by angle-resolved photoemission spectroscopy
• Muon spin rotation and infrared spectroscopy study of $B{a}_{1-x}N{a}_{x}F{e}_{2}A{s}_2$
• Large single crystal growth of BaFe1.87Co0.13As2 using a nucleation pole
• Unusual Sensitivity of Superconductivity to Strain in Iron-Based 122 Superconductors
• Coexistence of Clean- and Dirty-limit Superconductivity in LiFeAs
• Fluctuations and pairing in Fe-based superconductors: Light scattering experiments
• Combined effects of transition metal (Ni and Rh) substitution and annealing/quenching on physical properties of CaFe${}_2$As${}_2$
• Phase diagram as a function of doping level and pressure in Eu${}_{1-x}$La${}_x$Fe${}_2$As${}_2$ system
• Unusual microwave response and bulk conductivity of very thin fese0.3te0.7 films as a function of temperature
• Effects of Zn substitution on the electronic structure of BaFe${}_2$As${}_2$ revealed by angle-resolved photoemission spectroscopy
• Hidden robust presence of a hole Fermi surface in a heavily electron doped iron based superconductor LaFe${}_2$As${}_2$
• Low-temperature thermal conductivity of BaFe2As2: Parent compound of iron-arsenide superconductors
• Angle-resolved photoemission spectroscopy observation of anomalous electronic states in EuFe${}_2$As${}_{2-x}$P${}_x$
• Thermodynamic evidence for pressure-induced bulk superconductivity in the Fe-As pnictide superconductor CaFe2As2
• The influence of spin fluctuations on the thermal conductivity in superconducting Ba(Fe_{1-x}Co_x)_2As_2
• Physics picture from neutron scattering study on Fe-based superconductors
• Exploration of iron-chalcogenide superconductors
• Insights on unconventional superconductivity in HfV${}_2$Ga${}_4$ and ScV${}_2$Ga${}_4$ from first principles electronic structure calculations
• Stress-induced nematicity in EuFe2As2 studied by phononic Raman spectroscopy
• Critical properties of superconducting Ba1-xKxFe2As2
• Magnetic neutron scattering studies on the Fe-based superconductor system Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• Upper critical field, critical current density and thermally activated flux flow in CaFFe0.9Co0.1As superconductor
• Orbital localization and the role of the Fe and As $4p$ orbitals in BaFe${}_2$As${}_2$ probed by XANES
• ^{75}As NMR study of the growth of paramagnetic-metal domains due to electron doping near the superconducting phase in LaFeAsO_{1-x}F_{x}
• Angle-Resolved Photoemission Spectroscopy of Iron-Chalcogenide Superconductor Fe1.03Te0.7Se0.3 : Strong-Coupling Superconductivity and Universality of Inter-Band Scattering
• Pressure-induced superconductivity in Eu${}_{0.5}$Ca${}_{0.5}$Fe${}_2$As${}_2$ : FeAs-based superconductivity hidden by antiferromagnetism of Eu sublattice
• Electrodynamics of BaFe2As2 from infrared measurements under pressure
• High resolution x-ray scattering studies of structural phase transitions in Cr-doped BaFe2As2
• Effect of annealing on the specific heat of optimally doped Ba(Fe${}_{0.92}$Co${}_{0.08}$)${}_2$As${}_2$
• A Finite-temperature First-principles Approach to Spin Fluctuation in BaFe_2As_2
• Doping effects of Cr on the physical properties of BaFe${}_{1.9-x}$Ni${}_{0.1}$Cr${}_x$As${}_2$
• Multiband effects on the upper critical field angular dependence of 122-family iron pnictide superconductors
• Fermi surfaces and Phase Stability of Ba(Fe${}_{1-x}$M${}_x$)${}_2$As${}_2$ (M=Co, Ni, Cu, Zn)
• Instability of vortex-antivortex interface in optimally-doped Ba(Fe_{1-x}Co_{x})_{2}As_{2}
• Dependence of the absolute value of the penetration depth in $(\mathbf{B}{\mathbf{a}}_{1-\mathbf{x}}{\mathbf{K}}_{\mathbf{x}})\mathbf{F}{\mathbf{e}}_2\mathbf{A}{\mathbf{s}}_2$ on doping
• Optical and photoemission investigation of structural and magnetic transitions in the iron-based superconductor Sr${}_{0.67}$Na${}_{0.33}$Fe${}_2$As${}_2$
• Magnetically polarized Ir dopant atoms in superconducting Ba(Fe${}_{1-x}$Ir${}_x$)${}_2$As${}_2$
• Anomalous Dome-like Superconductivity in RE2(Cu1-xNix)5As3O2(RE=La, Pr, Nd)
• Uniform chemical pressure effect in solid solutions Ba(1-x)Sr(x)Fe2As2 and Sr(1-x)Ca(x)Fe2As2
• Tripling the critical temperature of KFe${}_2$As${}_2$ by carrier switch
• Role of Sn impurity on electronic topological transitions in 122 Fe-based superconductors
• Insulating and metallic spin glass in K${}_x$Fe${}_{2-\delta -y}$Ni${}_y$Se${}_2$ (0.06 $\le$ $y$ $\le$ 1.44) single crystals
• The interplay of electron doping and chemical pressure in Ba(Fe(1-y)Coy)2(As(1-x)Px)2
• Physical Properties of $B{a}_{2}M{n}_{2}S{b}_{2}O$ Single Crystals
• Upper Critical Fields and Anisotropy of Ca1-xLaxFe2As2 Single Crystals
• Temperature-composition Phase Diagrams for Ba1-xSrxFe2As2 and Ba0.5Sr0.5(Fe1-yCoy)2As2
• Theoretical investigation of the electronic and magnetic properties of the orthorhombic phase of Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Role of Fermi surface for the pressure-tuned nematic transition in the BaFe${}_2$As${}_2$ family
• Observation of charge accumulation and onsite Coulomb repulsion at transition metal impurities in the iron pnictides
• The electronic structure of Co-substituted $\text{Fe}\text{Se}$ superconductor probed by soft X-ray spectroscopy and density functional theory
• Single-crystal growth of iron-based superconductor La${}_{0.34}$Na${}_{0.66}$Fe${}_2$As${}_2$
• Zigzag chain structure transition and orbital fluctuations in Ni-based superconductors
• A direct probe of the variability of Coulomb correlation in Fe-pnictide superconductors
• Superconductivity and the electronic phase diagram of LaPt${}_{2-x}$Ge${}_{2+x}$
• Multiple Superconducting Gaps, Anisotropic Spin Fluctuations and Spin-Orbit Coupling in Iron-Pnictides
• Spin polarization of Ru in superconducting Ba(Fe${}_{0.795}$Ru${}_{0.205}$)${}_2$As${}_2$ studied by x-ray resonant magnetic scattering
• Contrast of LiFeAs with isostructural, isoelectronic, and non-superconducting MgFeGe
• Incoherent electronic band states in Mn-substituted BaFe${}_2$As${}_2$
• Electronic origin of structural transition in 122 Fe based superconductors
• Enhancement of the upper critical field in codoped iron-arsenic high-temperature superconductors
• Theoretical study on the anisotropic electronic structure of antiferromagnetic BaFe${}_2$As${}_2$ and Co-doped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ seen by angle-resolved photoemission
• Local Superconductivity in Vanadium Iron Arsenide
• Striking Zn impurity effect on the Fe-based superconductor BaFe1.87Co0.13As2
• Substitution of Ni for Fe in superconducting Fe${}_{0.98}$Te${}_{0.5}$Se${}_{0.5}$ depresses the normal-state conductivity but not the magnetic spectral weight
• Anisotropic optical properties of detwinned BaFe${}_2$As${}_2$
• New Superconducting RbFe2As2: A First-principles Investigation
• Disappearance and Survival of Superconductivity in FeSe under High Pressure
• Vibrational anomalies in AFe${}_2$As${}_2$ (A$=$Ca, Sr, and Ba) single crystals
• Absence of large nanoscale electronic inhomogeneities in the Ba(Fe1-xCox)2As2 pnictide
• Magnetic Properties of RFe2Si2 and R(Fe1-xMx)2Si2 Systems (R=La, Y and Lu, M= Ni, Mn and Cu)
• Spin reorientation of the Fe moments in Eu${}_{0.5}$Ca${}_{0.5}$Fe${}_2$As${}_2$: Evidence for a strong interplay of Eu and Fe magnetism
• Multi-layered chalcogenides with potential for magnetism and superconductivity
• Anisotropic spin-fluctuations in SmCoPO revealed by 31^P NMR measurement
• Study of the hyperfine fields in the BaFe${}_2$As${}_2$ family and its relation to the magnetic moment
• Anomalous magneto-elastic and charge doping effects in thallium-doped BaFe2As2
• Iron substitution in NdCoAsO: crystal structure and magnetic phase diagram
• Miscibility gap and possible intrinsic Griffiths phase in Sr(Fe1-xMnx)2As2 crystals grown by transitional metal arsenide flux
• Local electromagnetic properties of magnetic pnictides: A comparative study probed by NMR measurement
• Probing Local Variations of Superconductivity on the Surface of Ba(Fe1-xCox)2As2 Single Crystals
• Phase Diagram and Weak-link Behavior in Nd-doped CaFe_2As_2
• The order-parameter symmetry and Fermi surface topology of 122 Fe-based superconductors: a point-contact Andreev-reflection study
• Charge Transport in Ba${}_{1-x}$Rb${}_x$Fe${}_2$As${}_2$ Single Crystals
• Non-rigid band shift and non-monotonic electronic structure changes upon doping in the normal state of the pnictide high temperature superconductor Ba2(Fe1-xCox)2As2
• Superconductivity on the verge of electronic topological transition in Fe based superconductors
• Effect of electron doping in FeTe${}_{1-y}$Se${}_y$ realized by Co and Ni substitution
• Single nonmagnetic impurity resonance in FeSe-based 122-type superconductors as a probe for pairing symmetry
• Superconductivity by transition metal doping in Ca${}_{10}$(Fe${}_{1-x}$M${}_x$As)${}_{10}$(Pt${}_3$As${}_8$) (M = Co, Ni, Cu)
• Temperature-dependent structure of an intermetallic ErPd${}_2$Si${}_2$ single crystal: A combined synchrotron and in-house X-ray diffraction study
• High-Pressure Evolution of the Specific Heat of a Strongly Underdoped Ba(Fe0.963Co0.037)As2 Iron-Based Superconductor
• Local structural distortions and their role in superconductivity in SmFeAsO${}_{1-x}$F${}_x$ superconductors
• Magnetism and superconductivity in Eu0.2Sr0.8(Fe0.86Co0.14)2As2 probed by 75As NMR
• Successive transition from superconducting to antiferromagnetic phase in (Ca_6(Al, Ti)_4O_y)Fe_2As_2 studied via ^{75}As and ^{27}Al NMR
• Superconductivity with Tc=7 K under pressure for Cu-, and Au-doped BaFe2As2
• Effect of transition-metal substitution in iron-based superconductors
• Effects of single- and multi-substituted Zn ions in doped-122 type iron-based superconductors
• Elastic theory for the vortex-lattice melting in iron-based high-Tc superconductors
• Metallicity of Ca2Cu6P5 with Single and Double Copper-Pnictide Layers
• Disorder Induced Effects on the Critical Current Density of Iron Pnictide BaFe_1.8 Co_0.2 As_2 single crystals
• Re-entrance of resistivity due to the interplay of superconductivity and magnetism in $\ce{Eu_{0.73}Ca_{0.27}(Fe_{0.87}Co_{0.13})2As2}$
• Intrinsic superconducting properties and vortex dynamics in heavily overdoped Ba(Fe${}_{0.86}$Co${}_{0.14}$)${}_2$As${}_2$ single crystal
• Optimization of a Non-arsenic Iron-based Superconductor for Wire Fabrication
• Infrared photo-response of Fe-shunted Ba-122 thin film microstructures
• THz optical response of Ba(Fe${}_{1-x}$Ni${}_x$)${}_2$As${}_2$ films analyzed within the three-band Eliashberg s${}_{\pm }$-wave model
• Superconducting density of states and vortex lattice of LaRu${}_2$P${}_2$ observed by Scanning Tunneling Spectroscopy
• Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor Sr${}_2$VFeAsO${}_{3-\delta }$ Studied by X-ray Magnetic Circular Dichroism
• Persistent Magnetism in Silver-doped BaFe2As2 Crystals
• 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
• Nanoscale Interlayer Defects in Iron Arsenides
• Hole doping and electronic correlations in Cr-substituted BaFe${}_2$As${}_2$
• Vanishing vortex creep at the transition from ordered to disordered vortex phases in Ba${}_{0.64}$K${}_{0.36}$Fe${}_2$As${}_2$
• Estimates for the thermodynamic signatures of vortex-lattice melting in conventional superconductors
• Effect of Impurities with Internal Structure on Multiband Superconductors - Possible Enhancement of Transition Temperature -
• Experimental and theoretical electronic structure of EuRh2As2
• Synthesis and physical properties of the new potassium iron selenide superconductor K0.80Fe1.76Se2
• Electronic structure of LaFe1-xCoxAsO from first principle calculations
• 75As NMR probe of antiferromagnetic fluctuations in Ba(Fe1-xRux)2As2
• Prediction of Antiferromagnetism in Barium Chromium Phosphide Confirmed after Synthesis
• Structural and antiferromagnetic properties of Ba(Fe${}_{1-x-y}$Co${}_x$Rh${}_y$)${}_2$As${}_2$ compounds
• Superconductivity in layered iron Selenide induced by cobalt- and sodium-doping
• Emergence of the minority hole with high mobility on the electrical transport in the Fe-pnictides Ba(Fe${}_{1-x}$Mn${}_x$As)${}_2$
• Superconductivity Near a Quantum Critical Point in Ba(Fe,Co)2As2
• Temperature-dependent local structure of superconducting BaPd${}_2$As${}_2$ and SrPd${}_2$As${}_2$
• Effect of Co doping and hydrostatic pressure on SrFe2As2
• The role of magnetic excitations in magnetoresistance and Hall effect of slightly TM-substituted BaFe${}_2$As${}_2$ compounds (TM = Mn, Cu, Ni)
• Time-Resolved Photoemission Spectroscopy of Quantum Materials Using High Harmonic Generation: Probing Electron-Phonon Interactions and Non-Equilibrium Dynamics
• Localized and itinerant dichotomy of electrons in Ba(Fe,Co)2As2
• Lattice Disorder Effect on Magnetic Ordering of Iron Arsenides
• Phase diagram of the isovalent phosphorous-substituted 122-type iron pnictides
• Utilization of mechanical alloying method for flux growth of single crystalline BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Hydrostatic pressure study of the structural phase transitions and superconductivity in single crystals of (Ba1-xKx)Fe2As2 (x = 0 and 0.45) and CaFe2As2
• Absence of itinerant ferromagnetism in a cobalt-based oxypnictide
• Pressure-Induced Structural and Magnetic Evolution in Layered Antiferromagnet YbMn${}_2$Sb${}_2$
• Emergence of ferromagnetism due to Ir substitutions in single-crystalline Ba[Co(1 x)Ir(x)]2As2
• Crystal growth and characterization of a hole-doped iron-based superconductor Ba(Fe${}_{0.875}$Ti${}_{0.125}$)${}_2$As${}_2$
• $a-b$ Plane Point Contact Spectroscopy measurements of optimally Cobalt doped Ba-122 iron-pnictide superconductors