When low- and high-energy electronic responses meet in cuprate superconductors

Abstract

The existence of coherent quasiparticles near the Fermi energy in the low temperature state of high-temperature superconductors has been well established by angle-resolved photoemission spectroscopy (ARPES). This technique directly probes the momentum-resolved electronic excitation spectrum of the CuO${}_2$ planes. We present a study of close to optimally doped La${}_{1.83}$Sr${}_{0.17}$CuO${}_4$ in the superconducting state and report an abrupt change in the quasiparticle spectral function, as we follow the dispersion of the ARPES signal from the Fermi energy up to 0.6 eV. The interruption in the quasiparticle dispersion separates coherent quasiparticle peaks at low energies from broad incoherent excitations at high energies. We find that the boundary between these low-energy and high-energy features exhibits a cosine-shaped momentum dependence, reminiscent of the superconducting d-wave gap. Further intriguing similarities between characteristics of the incoherent excitations and quasiparticle properties (lifetime, Fermi arcs) suggest a close relation between the electronic response at high and low energies in cuprate superconductors.

References in corpus (5)

• A universal high energy anomaly in angle resolved photoemission spectra of high temperature superconductors - possible evidence of spinon and holon branches
• Anomalous high energy dispersion in photoemission spectra from insulating cuprates
• High-energy scale revival and giant kink in the dispersion of a cuprate superconductor
• Physics of cuprates with the two-band Hubbard model - The validity of the one-band Hubbard model
• String excitations of a hole in a quantum antiferromagnet and photoelectron spectrospopy

Cited by in corpus (38)

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• Identification of a New Form of Electron Coupling in Bi2Sr2CaCu2O8 Superconductor by Laser-Based Angle-Resolved Photoemission
• The Persistence of High-Frequency Spin Fluctuations in Overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$ ($x$=0.22)
• Correlation between $T_c$ and anisotropic scattering in Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$
• High Energy Dispersions in Bi2Sr2CaCu2O8 High Temperature Superconductor from Laser-Based Angle-Resolved Photoemission
• Effect of strong correlations on the high energy anomaly in hole- and electron-doped high-Tc superconductors
• Intermediate Coupling Model of the Cuprates
• Dispersion of the odd magnetic resonant mode in near-optimally doped Bi2Sr2CaCu2O8+d
• Direct Observation of Orbital Hybridisation in a Cuprate Superconductor
• Anisotropic quasiparticle scattering rates in slightly underdoped to optimally doped high-temperature \LSCO\ superconductors
• Temperature and doping dependence of high-energy kink in cuprates
• Origin of Strong Dispersion in Hubbard Insulators
• Excitation energy map of the high-energy dispersion anomalies in cuprates
• Two-dimensional type-II Dirac fermions in layered oxides
• Angle-resolved photoemission spectroscopy of band tails in lightly doped cuprates
• Extracting the spectral function of the cuprates by a full two-dimensional analysis: Angle-resolved photoemission spectra of Bi2Sr2CuO6
• Universality of the single-particle spectra of cuprate superconductors
• Band Structure of Overdoped Cuprate Superconductors: Density Functional Theory Matching Experiments
• Two-mode variational Monte Carlo study of Quasiparticle excitations in cuprates
• Differences in the high-energy kink between hole- and electron-doped high-$T_{\mathrm{c}}$ superconductors
• The high-energy anomaly in ARPES spectra of the cuprates-many body or matrix element effect?
• Spin-polaron band structure and hole pockets in underdoped cuprates
• Quantitative Determination of Eliashberg Function and Evidence of Strong Electron Coupling with Multiple Phonon Modes in Heavily Over doped (Bi,Pb)2Sr2CuO6
• Evidence for Multiple Underlying Fermi Surface and Isotropic Energy Gap in the Cuprate Parent Compound Ca${}_2$CuO${}_2$Cl${}_2$
• Kinks and waterfalls as signatures of competing order in angle-resolved photoemission spectra of La_{2-x}Sr_xCuO_4
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• Electron self-energy from quantum charge fluctuations in the layered t-J model with long-range Coulomb interaction
• Theory of the waterfall phenomenon in cuprate superconductors
• Local correlations necessitate waterfalls as a connection between quasiparticle band and developing Hubbard bands
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• Orbital-selective metal skin induced by alkali-metal-dosing Mott-insulating Ca${}_2$RuO${}_4$
• One-electron scattering rate and normal-state linear-$T$ resistivity of the cuprates
• Energy-dependent scaling of incoherent spectral weight and the origin of the waterfalls in high-Tc cuprates