Sharp Low-Energy Feature in Single-Particle Spectra due to Forward Scattering in d-Wave Cuprate Superconductors
Seung Hwan Hong, Jin Mo Bok, Wentao Zhang, Junfeng He, X. J. Zhou, C. M. Varma, Han-Yong Choi
DOI 10.1103/PhysRevLett.113.057001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
There is an enormous interest in the renormalization of the quasiparticle (qp) dispersion relation of cuprate superconductors both below and above the critical temperature Tc because it enables the determination of the fluctuation spectrum to which the qp’s are coupled. A remarkable discovery by angle-resolved photoemission spectroscopy (ARPES) is a sharp low-energy feature (LEF) in qp spectra well below the superconducting energy gap but with its energy increasing in proportion to Tc and its intensity increasing sharply below Tc. This unexpected feature needs to be reconciled with d-wave superconductivity. Here, we present a quantitative analysis of ARPES data from Bi2Sr2CaCu2O8+δ (Bi2212) using Eliashberg equations to show that the qp scattering rate due to the forward scattering impurities far from the Cu-O planes is modified by the energy gap below Tc and shows up as the LEF. This is also a necessary step to analyze ARPES data to reveal the spectrum of fluctuations promoting superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 82 | Pressure not reported | unknown |
Similar papers
Influence of higher d-wave gap harmonics on the dynamical magnetic susceptibility of high-temperature superconductors
similarity 0.96A. P. Schnyder et al.
Source status unknown — claims are unverified
High-Resolution Photoemission Study of the Low-Energy Excitations Reflecting the Superconducting State of Bi-Sr-Ca-Cu-O Single Crystals
similarity 0.96J. -M. Imer et al.
Source status unknown — claims are unverified
Elastic Scattering Susceptibility of the High Temperature Superconductor Bi2Sr2CaCu2O8+δ: A Comparison between Real and Momentum Space Photoemission Spectroscopies
similarity 0.96K. McElroy et al.
Source status unknown — claims are unverified
Determination of the Fermi surface in high-Tc superconductors by angle-resolved photoemission spectroscopy
similarity 0.96J. Mesot et al.
Source status unknown — claims are unverified
Angle-resolved photoemission spectroscopy study of the superconducting gap anisotropy in Bi2Sr2CaCu2O8+x
similarity 0.96H. Ding et al.
Source status unknown — claims are unverified
High-Energy Kink Observed in the Electron Dispersion of High-Temperature Cuprate Superconductors
similarity 0.95T. Valla et al.
Source status unknown — claims are unverified