Phosphor induced significant hole-doping in ferropnictide superconductor BaFe2(As(1-x)Px)2

Abstract

The superconductivity in high temperature superconductors ordinarily arises when doped with hetero-valent ions that introduce charge carriers. However, in ferropnictides, "iso-valent" doping, which is generally believed not to introduce charge carriers, can induce superconductivity as well. Moreover, unlike other ferropnictides, the superconducting gap in BaFe2(As1-xPx)2 has been found to contain nodal lines. The exact nature of the "iso-valent" doping and nodal gap here are key open issues in building a comprehensive picture of the iron-based high temperature superconductors. With angle-resolved photoemission spectroscopy (ARPES), we found that the phosphor substitution in BaFe2(As1-xPx)2 induces sizable amount of holes into the hole Fermi surfaces, while the dxy-originated band is relatively intact. This overturns the previous common belief of "iso-valent" doping, explains why the phase diagram of BaFe2(As1-xPx)2 is similar to those of the holedoped compounds, and rules out theories that explain the nodal gap based on vanishing dxy hole pocket.

arXiv comment6 pages, 4 figures

References in corpus (34)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2
• Near-degeneracy of several pairing channels in multiorbital models for the Fe-pnictides
• Pnictogen height as a possible switch between high-T_c nodeless and low-T_c nodal pairings in the iron based superconductors
• Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO1-y (Ln=La,Nd)
• Pressure evolution of low-temperature crystal structure and bonding of 37 K $T_c$ FeSe superconductor
• Superconductivity up to 29 K in SrFe2As2 and BaFe2As2 at high pressures
• Anion height dependence of Tc for the Fe-based superconductor
• Fermi surface nesting induced strong pairing in iron-based superconductors
• Superconductivity up to 30 K in the vicinity of quantum critical point in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Line nodes in the energy gap of high-temperature superconducting BaFe_2(As_{1-x}P_x)_2 from penetration depth and thermal conductivity measurements
• Unconventional superconductivity and antiferromagnetic quantum critical behavior in the isovalent-doped BaFe2(As1-xPx)2
• Bandwidth and Fermi surface of Iron-Oxypnictides: covalency and sensitivity to structural changes
• Evolution of the Fermi surface of BaFe_2(As_{1-x}P_x)_2 on entering the superconducting dome
• Nodal superconducting gap structure in ferropnictide superconductor BaFe2(As0.7P0.3)2
• Where Are the Extra d Electrons in Transition-Metal Substituted Fe Pnictides?
• Symmetry breaking via orbital-dependent reconstruction of electronic structure in uniaxially strained NaFeAs
• ^{31}P and ^{75}As NMR evidence for a residual density of states at zero energy in superconducting BaFe_2(As_{0.67}P_{0.33})_2
• Superconductivity in LaFeAs${}_{1-x}$P${}_x$O: effect of chemical pressures and bond covalency
• Nodeless vs nodal order parameters in LiFeAs and LiFeP superconductors
• The orbital characters of bands in iron-based superconductor BaFe1.85Co0.15As2
• Nodal gap structure of BaFe_2(As_{1-x}P_x)_2 from angle-resolved thermal conductivity in a magnetic field
• Possible three dimensional nodes in the $s\pm$ superconducting gap of BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Nodes in the Gap Function of LaFePO, the Gap Function of the Fe(Se,Te) Systems, and the STM Signature of the s${}_{\pm }$ Pairing
• Significant reduction of electronic correlations upon isovalent Ru substitution of BaFe2As2
• Chemical Pressure and Physical Pressure in BaFe_2(As_{1-x}P_{x})_2
• Two- and Three-Dimensional Fermi Surfaces and their Nesting Properties in Superconducting BaFe2(As1-xPx)2
• Existence, character and origin of surface-related bands in the high temperature iron pnictide superconductor BaFe_{2-x}Co_{x}As_{2}
• Spin fluctuations and unconventional pairing in KFe${}_2$As${}_2$
• Superconductivity induced by doping Ru in SrFe2-xRuxAs2
• Inter-layer Superconducting Pairing Induced c-axis Nodal Lines in Iron-based Superconductors
• Why some Iron-based superconductors are nodal while others are nodeless

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• Iron based high transition temperature superconductors
• Extraordinary quasiparticle scattering and bandwidth-control by dopants in iron-based superconductors
• Ultrafast modulation of the chemical potential in BaFe${}_2$As${}_2$ by coherent phonons
• Normal-state charge dynamics in doped BaFe2As2: Roles of doping and necessary ingredients for superconductivity
• Strong pairing at iron $3d_{xz,yz}$ orbitals in hole-doped BaFe${}_2$As${}_2$
• Unified phase diagram for iron-based superconductors
• Unusual temperature dependence of band dispersion in Ba(Fe(1-x)Ru(x))2As2 and its consequences for antiferromagnetic ordering
• Do Se vacancies electron dope monolayer FeSe?
• Evolution from incoherent to coherent electronic states and its implications to superconductivity in FeTe1-xSex
• Comprehensive Eliashberg analysis of microwave conductivity and penetration depth of K-, Co-, and P-substituted BaFe2As2
• Angle-resolved photoemission spectroscopy study on iron-based superconductors
• Inter-plane resistivity of isovalent doped BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Superfluid density and superconducting gaps of RbFe_{2}As_{2} as a function of hydrostatic pressure
• Anomalous phonon redshift in K-doped BaFe2As2 iron pnictides
• Microscopic Parameters from High-Resolution Specific Heat Measurements on Overdoped BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ Single Crystals
• Optical observation of spin-density-wave fluctuations in Ba122 iron-based superconductors
• Comprehensive study of out-of-plane transport properties in BaFe${}_2$As${}_2$: Three-dimensional electronic state and effect of chemical substitution
• The interplay of electron doping and chemical pressure in Ba(Fe(1-y)Coy)2(As(1-x)Px)2
• Revealing the intrinsic superconducting gap anisotropy in surface-neutralized BaFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$
• Mössbauer studies of spin- and charge-modulations in BaFe2(As1-xPx)2
• Phase diagram of the isovalent phosphorous-substituted 122-type iron pnictides
• Three-dimensional spin susceptibility in Ba${}_{0.75}$K${}_{0.25}$Fe${}_2$As${}_2$: Out-of-plane modulation revealed by neutron spectroscopy and theoretical modeling