Measuring the gap in ARPES experiments

Abstract

Angle-resolved photoemission spectroscopy (ARPES) is considered as the only experimental tool from which the momentum distribution of both the superconducting and pseudo-gap can be quantitatively derived. The binding energy of the leading edge of the photoemission spectrum, usually called the leading edge gap (LEG), is the model-independent quantity which can be measured in the modern ARPES experiments with the very high accuracy--better than 1 meV. This, however, may be useless as long as the relation between the LEG and the real gap is unknown. We present a systematic study of the LEG as a function of a number of physical and experimental parameters. The absolute gap values which have been derived from the numerical simulation prove, for example that the nodal direction in the underdoped Bi-2212 in superconducting state is really the node--the gap is zero. The other consequences of the simulations are discussed.

revtex4, 9 pages, 6 figures

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Cited by in corpus (60)

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• Higgs mode in the d-wave superconductor Bi2Sr2CaCu2O8+x driven by an intense terahertz pulse
• Bare electron dispersion from photoemission experiments
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• Doping dependence of the mass enhancement in (Pb,Bi)_2 Sr_2 Ca Cu_2 O_8 at the antinodal point in the superconducting and normal state
• Point nodes persisting far beyond Tc in Bi2212
• Resonant magnetic excitations at high energy in superconducting $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6.85}$
• What the resonance peak does
• Energy gaps in the failed high-Tc superconductor La1.875Ba0.125CuO4
• Charge-Density-Wave-Induced Peak-Dip-Hump Structure and the Multiband Superconductivity in a Kagome Superconductor CsV${}_3$Sb${}_5$
• Enhanced superconducting gaps in the tri-layer high-$T_c$ cuprate Bi${}_2$Sr${}_2$Ca${}_2$Cu${}_3$O${}_{10+\delta }$
• The superconducting gaps in LiFeAs: Joint study of specific heat and ARPES
• Modeling scanning tunneling spectra of $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+\delta }$
• 3D superconducting gap in FeSe from ARPES
• Doping Dependence of Bilayer Resonant Spin Excitations in $(\mathbf{Y},\mathbf{Ca})\mathbf{B}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6+\mathbf{x}}$
• Dispersion of the odd magnetic resonant mode in near-optimally doped Bi2Sr2CaCu2O8+d
• Manifestation of the magnetic resonance mode in the nodal quasiparticle lifetime in superconducting cuprates
• Momentum Dependence of the Single-Particle Self-Energy and Fluctuation Spectrum of Slightly Underdoped Bi_2 Sr_2 CaCu_2 O_{8+δ} from High Resolution Laser ARPES
• Evidence for CuO conducting band splitting in the nodal direction of Bi-2212
• ARPES experiment in fermiology of quasi-2D metals (Review Article)
• Non-monotonic pseudo-gap in high-Tc cuprates
• Search for superconducting proximity effect in a topological insulator and high temperature superconductor heterostructure Bi2Se3/Bi2Sr2CaCu2O8+
• An ARPES view on the high-Tc problem: phonons vs spin-fluctuations
• ARPES on HTSC: simplicity vs. complexity
• Electronic structure of kinetic energy driven cuprate superconductors
• Theory for ultrafast nonequilibrium dynamics in d-wave superconductors
• Relation between the one-particle spectral function and dynamic spin susceptibility in superconducting Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8-\delta }$
• Universality of the single-particle spectra of cuprate superconductors
• The pseudogap ground state in high temperature superconductors
• Fermi arcs in cuprate superconductors: tracking the pseudogap below Tc and above T*
• Effect of Zn and Ni impurities on the quasiparticle renormalization in Bi-2212
• Strong-coupling analysis of scanning tunneling spectra in Bi${}_2$Sr${}_2$Ca${}_2$Cu${}_3$O${}_{10+\delta }$
• Electronic band structure of optimal superconductors: from cuprates to ferropnictides and back again
• A reevaluation of the coupling to a bosonic mode of the charge carriers in (Bi,Pb)${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ at the antinodal point
• Doping dependence of the many-body effects along the nodal direction in the high-Tc cuprate (Bi,Pb)_2Sr_2CaCu_2O_8
• Lifshitz quantum phase transitions and Fermi surface transformation with hole doping in high-$T_c$ superconductors
• Multiband Superconductivity in Spin Density Wave Metals
• Electronic structure of kinetic energy driven superconductors in the presence of bilayer splitting
• Circular dichroism and bilayer splitting in the normal state of underdoped (Pb,Bi)${}_2$Sr${}_2$(Ca${}_x$Y${}_{1-x}$)Cu${}_2$O${}_{8+\delta }$ and overdoped (Pb,Bi)${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Optical sum rule anomalies in the cuprates: interplay between strong correlation and electronic bandstructures
• Novel results in STM, ARPES, HREELS, Nernst, neutron, Raman, and isotope substitution experiments and their relation to bosonic modes and charge inhomogeneity, from perspective of negative-Ueff boson-fermion modelling of HTSC
• Intraband Optical Spectral Weight in the presence of a van Hove singularity: application to Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Spin susceptibility in bilayered cuprates: resonant magnetic excitations
• Deconstruction of Resolution Effects in Angle-Resolved Photoemission
• Thermodynamic properties of Bi2Sr2CaCu2O8 calculated from the electronic dispersion
• Controversy over large proximity induced s wave like pairing from a d wave superconductor
• Universal Properties of Cuprate Superconductors: Tc Phase Diagram, Room-Temperature Thermopower, Neutron Spin Resonance, and STM Incommensurability Explained in Terms of Chiral Plaquette Pairing
• $\eta$ collective mode as A${}_{1g}$ Raman resonance in cuprate superconductors
• Pseudogap behaviour in Bi2212: Results of Generalized DMFT Approach
• Strong coupling behavior of the neutron resonance mode in unconventional superconductors
• From tunneling to photoemission: correlating two spaces
• Life of the nodal quasiparticles in Bi-2212 as seen by ARPES
• Charge modulation driven Fermi surface of Pb-Bi2201
• Theory of the hourglass dispersion of magnetic excitations in high-T${}_c$ cuprates
• Anisotropic Thermal Transport in Superconductors with Coexisting Spin Density Waves
• Quantitative Determination of the Pairing Interactions for High Temperature Superconductivity in Cuprates
• About the relation between the quasiparticle Green's function in cuprates obtained from ARPES data and the magnetic susceptibility