Direct observation of self energy signatures of the resonant collective mode in Bi2Sr2CaCu2O8

Abstract

We use high resolution ARPES to study the resonant, collective excitation mode in the superconducting state of Bi2212. By collecting very high quality data we found new features in the self energy in the antinodal region, where the interaction of electrons with the mode is the strongest. This interaction leads to pronounced peak in the scattering rate and we demonstrate that this feature is directly responsible for well known hump-dip-peak structure in cuprates. By studying how the weight of this peak changes with temperature we unequivocally demonstrate that interaction of electrons with resonant mode in cuprates vanishes at Tc and is very much localized in the momentum space close to the antinode. These findings present a consistent picture of line shape and self energy signatures of the electron-boson coupling in cuprates and resolve long standing controversy surrounding this issue. The momentum dependence of the strength of electron-mode interaction enables development of quantitative theory of this phenomenon in cuprates.

5 pages, 5 figures

References in corpus (2)

• Direct evidence for a competition between the pseudogap and high temperature superconductivity in the cuprates
• An Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates

Cited by in corpus (16)

• Disappearance of Superconductivity Due to Vanishing Coupling in the Overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Unambiguous connection between the Fermi surface topology and the pseudogap in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+d}$
• Autocorrelation of quasiparticle spectral intensities and its connection with quasiparticle scattering interference in cuprate superconductors
• Interplay between charge order and superconductivity in cuprate superconductors
• Peak-structure in self-energy of cuprate superconductors
• Anomalous electron spectrum and its relation to peak structure of electron scattering rate in cuprate superconductors
• Electron self-energy from quantum charge fluctuations in the layered t-J model with long-range Coulomb interaction
• Anisotropic dressing of electrons in electron-doped cuprate superconductors
• Low-temperature T-linear resistivity in the strange metal phase of overdoped cuprate superconductors due to umklapp scattering from a spin excitation
• Influence of impurities on electronic structure in cuprate superconductors
• Enhancement of superconductivity by electronic nematicity in cuprate superconductors
• Low-temperature T${}^2$ resistivity in the underdoped pseudogap phase versus T-linear resistivity in the overdoped strange-metal phase of cuprate superconductors
• Renormalization of electrons in bilayer cuprate superconductors
• Unusual electronic structure in underdoped cuprate superconductors
• Impurity-Scattering Assisted Umklapp Scattering as the Origin of Low-Temperature Resistivity in the Normal-State of Cuprate Superconductors
• Microwave conductivity due to impurity scattering in cuprate superconductors