Neutron Scattering and the B_{1g} Phonon in the Cuprates

Abstract

The momentum dependent lineshape of the out-of-phase oxygen vibration as measured in recent neutron scattering measurements is investigated. Starting from a microscopic coupling of the phonon vibration to a local crystal field, the phonon lineshift and broadening is calculated as a function of transfered momentum in the superconducting state of YBa${}_2$Cu${}_3$O${}_7$. It is shown that the anisotropy of the density of states, superconducting energy gap, and the electron-phonon coupling are all crucial in order to explain these experiments.

new figures and discussion

References in corpus (3)

• Superconductivity-Induced Anomalies in the Spin Excitation Spectra of Underdoped YBa_2 Cu_3 O_{6+x}
• Out-of-plane instability and electron-phonon contribution to s- and d-wave pairing in high-temperature superconductors; LDA linear-response calculation for doped CaCuO2 and a generic tight-binding model
• Enhanced Electron-Phonon Coupling and its Irrelevance to High T${}_c$ Superconductivity

Cited by in corpus (13)

• Anisotropic electron-phonon interaction in the cuprates
• Coupling Of The B1g Phonon To The Anti-Nodal Electronic States of Bi2Sr2Ca0.92Y0.08Cu2O(8+delta)
• A Systematic Study of Electron-Phonon Coupling to Oxygen Modes Across the Cuprates
• Interplay between electron-phonon and Coulomb interactions in cuprates
• Directly characterizing the relative strength and momentum dependence of electron-phonon coupling using resonant inelastic x-ray scattering
• Highly anisotropic anomaly in the dispersion of the copper-oxygen bond-bending phonon in superconducting YBa2Cu3O7 from inelastic neutron scattering
• Cavity magnon-polaritons in cuprate parent compounds
• Phononic Self energy effects and superconductivity in CaC${}_6$
• Charge instabilities and electron-phonon interaction in the Hubbard-Holstein model
• The Impact of an Oxygen Dopant in an ideal Bi-2212 Crystal
• Ubiquitous Coexisting Electron-Mode Couplings in High Temperature Cuprate Superconductors
• Anomalous isotope Effect in d-wave superconductors on the square lattice
• Intrinsic Hallmarks of Phonon-Induced Charge Order in Cuprates