The Origin and Non-quasiparticle Nature of Fermi Arcs in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$

Abstract

A Fermi arc is a disconnected segment of a Fermi surface observed in the pseudogap phase of cuprate superconductors. This simple description belies the fundamental inconsistency in the physics of Fermi arcs, specifically that such segments violate the topological integrity of the band. Efforts to resolve this contradiction of experiment and theory have focused on connecting the ends of the Fermi arc back on itself to form a pocket, with limited and controversial success. Here we show the Fermi arc, while composed of real spectral weight, lacks the quasiparticles to be a true Fermi surface. To reach this conclusion we developed a new photoemission-based technique that directly probes the interplay of pair-forming and pair-breaking processes with unprecedented precision. We find the spectral weight composing the Fermi arc is shifted from the gap edge to the Fermi energy by pair-breaking processes. While real, this weight does not form a true Fermi surface, because the quasiparticles, though significantly broadened, remain at the gap edge. This non-quasiparticle weight may account for much of the unexplained behavior of the pseudogap phase of the cuprates.

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• Evidence for superconductivity in Li-decorated monolayer graphene
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• Fermi Surface and Pseudogap Evolution in a Cuprate Superconductor
• Examining electron-boson coupling using time-resolved spectroscopy
• Point nodes persisting far beyond Tc in Bi2212
• Direct spectroscopic evidence for phase competition between the pseudogap and superconductivity in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Photoemission perspective on pseudogap, superconducting fluctuations, and charge order in cuprates: a review of recent progress
• Direct determination of mode-projected electron-phonon coupling in the time-domain
• Square Lattice Iridates
• Collapse of the Fermi surface and fingerprints of order in the pseudogap state of cuprate superconductors
• Connecting high-field quantum oscillations to zero-field electron spectral functions in the underdoped cuprates
• Phase Diagram of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Revisited
• Charge ordering in superconducting copper oxides
• Time-resolved photoemission apparatus achieving sub-20-meV energy resolution and high stability
• Evolution from a nodeless gap to d(x2-y2) form in underdoped La(2-x)SrxCuO4
• Collapse of superconductivity in cuprates via ultrafast quenching of phase coherence
• Pre-pairing and the "Filling" Gap in the Cuprates From the Tomographic Density of States
• Friedel Oscillations as a Probe of Fermionic Quasiparticles
• Pairing, Pseudogap and Fermi Arcs in Cuprates
• The special role of the first Matsubara frequency for superconductivity near a quantum-critical point -- the non-linear gap equation below $T_c$ and spectral properties in real frequencies
• The interplay between superconductivity and non-Fermi liquid at a quantum-critical point in a metal
• Thermodynamic properties of the Dynes superconductors
• Quasi-particles ultrafastly releasing kink bosons to form Fermi arcs in a cuprate superconductor
• Establishing non-thermal regimes in pump-probe electron-relaxation dynamics
• Monte Carlo study of the pseudogap and superconductivity emerging from quantum magnetic fluctuations
• Time-resolved ARPES on cuprates: Tracking the low-energy electrodynamics in the time domain
• Charge-screening role of $c$-axis atomic displacements in YBa${}_2$Cu${}_3$O${}_{6+x}$ and related superconductors
• Effects, Determination, and Correction of Count Rate Nonlinearity in Multi-Channel Analog Electron Detectors
• Doping and temperature evolution of pseudogap and spin-spin correlations in the two-dimensional Hubbard model
• Evolution of remnant Fermi surface state in lightly-doped correlated spin-orbit insulator Sr${}_{2-x}$La${}_x$IrO${}_4$
• Superconductivity above a quantum critical point in a metal -- gap closing vs gap filling, Fermi arcs, and pseudogap behavior
• Fermi Arcs From Dynamical Variational Monte Carlo
• Exploring Quasiparticles in High-Tc Cuprates Through Photoemission, Tunneling, and X-ray Scattering Experiments
• Spectroscopic Evidence of Low Energy Gaps Persisting Towards 120 Kelvin in Surface-Doped p-Terphenyl Crystals
• Absence of a BCS-BEC crossover in the cuprate superconductors
• Ubiquitous Charge Order Correlations in High-Temperature Superconducting Cuprates
• Particle-hole Asymmetry in the Cuprate Pseudogap Measured with Time-Resolved Spectroscopy
• $d$-wave superconducting gap observed in protect-annealed electron-doped cuprate superconductors Pr${}_{1.3-x}$La${}_{0.7}$Ce${}_x$CuO${}_4$
• Shubnikov-de Haas quantum oscilations reveal a reconstructed Fermi surface near optimal doping in a thin film of the cuprate superconductor Pr${}_{1.86}$Ce${}_{0.14}$CuO${}_{4\pm \delta }$
• Fermi and Luttinger arcs: two concepts, realized on one surface
• Pseudogap-induced coexistence of Fermi arcs and Fermi pockets in cuprate superconductors
• Self-Energies and Quasiparticle Scattering Interference
• Intrinsic Cluster-Shaped Density Waves in Cellular Dynamical Mean-Field Theory
• Consistent two-lifetime model for spectral functions of superconductors
• Large momentum-dependence of the main dispersion "kink" in the high-Tc superconductor Bi2Sr2CaCu2O8+δ
• Incoherent superconductivity well above $T_c$ in high-$T_c$ cuprates - harmonizing the spectroscopic and thermodynamic data
• Interplay of superconductivity and bosonic coupling in the peak-dip-hump structure of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• A picture of pseudogap phase related to charge fluxes
• Revised phase diagram of the high-$T_c$ cuprate superconductor Pb-doped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ revealed by anisotropic transport measurements
• The High Temperature Superconductivity in Cuprates: Physics of the Pseudogap Region
• Emergence of Superconductivity from Fully Incoherent Normal State in an Iron-Based Superconductor (Ba${}_{0.6}$K${}_{0.4}$)Fe${}_2$As${}_2$
• What is the Pairing Glue in the Cuprates? Insights from Normal and Anomalous Propagators
• Simultaneous drop in mean free path and carrier density at the pseudogap onset in high-$T_c$ cuprates
• Auxiliary fermion approach to the RIXS spectrum in a doped cuprate
• Observation of the Yamaji effect in a cuprate superconductor
• Superconducting fluctuations and charge-4$e$ plaquette state at strong coupling
• Ubiquitous suppression of the nodal coherent spectral weight in Bi-based cuprates
• Hallmarks of the Mott-Metal Crossover in the Hole Doped J=1/2 Mott insulator Sr2IrO4
• Implications of Charge Ordering in the High Tc Cuprate Superconductors in the Far-infrared Spectroscopy
• In-plane and Out-of-plane Plasma Resonances in Optimally Doped La1.84Sr0.16CuO4
• The k-space Origins of Scattering in Bi2Sr2CaCu2O8+x
• Empirical case for two pseudogaps in cuprate superconductors
• On the charged boson gas model as a theory of high Tc superconductivity
• A first-principles-based study of the thermodynamics of competing low-energy states in correlated materials: Example of cuprates
• Theory of dispersive optical phonons in resonant inelastic x-ray scattering experiments