An Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates

Abstract

Angle-resolved photoemission spectroscopy with low-energy tunable photons along the nodal direction of oxygen isotope substituted Bi2Sr2CaCu2O8+delta reveals a distinct oxygen isotope shift near the electron-boson coupling "kink" in the electronic dispersion. The magnitude (a few meV) and direction of the kink shift are as expected due to the measured isotopic shift of phonon frequency, which are also in agreement with theoretical expectations. This demonstrates the participation of the phonons as dominant players, as well as pinpointing the most relevant of the phonon branches.

5 pages, 3 figures

References in corpus (8)

• Interplay of electron-lattice interactions and superconductivity in Bi2Sr2CaCu2O8+d
• Laser ARPES, the sudden approximation, and quasiparticle-like peaks in Bi2Sr2CaCu2O8+delta
• Doping dependence of the coupling of electrons to bosonic modes in the single-layer high-temperature Bi2Sr2CuO6 superconductor
• Momentum dependence of the electron-phonon coupling and self-energy effects in YBa_2Cu_3O_7 within the local density approximation
• Unmasking the nodal quasiparticle dynamics in cuprate superconductors using low-energy photoemission
• Oxygen phonon branches in overdoped La${}_{1.7}$Sr${}_{0.3}$CuO${}_4$
• Superconductivity-Induced Self-Energy Evolution of the Nodal Electron of Optimally-Doped Bi2212
• Role of Inelastic Tunneling through the Barrier in Scanning Tunneling Microscope Experiments on Cuprates

Cited by in corpus (31)

• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Disentangling the electronic and phononic glue in a high-Tc superconductor
• Femtosecond Quasiparticle and Phonon Dynamics in Superconducting YBa2Cu3O7 Studied by Wideband Terahertz Spectroscopy
• Photoemission kinks and phonons in cuprates
• Intermediate Coupling Model of the Cuprates
• Unmasking the Origin of Kinks in the Photoemission Spectra of Cuprate Superconductors
• Mode-selective coupling of coherent phonons to the Bi2212 electronic band structure
• The impact of dynamical screening on the phonon dynamics of LaCuO
• Coupling of Low Energy Electrons in Optimally Doped Bi2212 to an Optical Phonon Mode
• Possible enhancement of the superconducting $T_c$ due to sharp Kohn-like soft phonon anomalies
• Through a Lattice Darkly -- Shedding Light on Electron-Phonon Coupling in the High T${}_c$ Cuprates
• Characteristics of oxygen isotope substitutions in the quasiparticle spectrum of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Density of States Modulations from Oxygen Phonons in d-wave Superconductors: Reconciling Angle-Resolved Photoemission Spectroscopy and Scanning Tunneling Microscopy
• Ultrafast spectroscopy of quasiparticle dynamics in cuprate superconductors
• The isotope effect in the Hubbard model with local phonons
• Low-energy kink in the nodal dispersion of copper-oxide superconductors: Insights from Dynamical Mean Field Theory
• Translational-invariant bipolarons and superconductivity
• Anisotropic dressing of electrons in electron-doped cuprate superconductors
• Role of electron-phonon interaction in a magnetically driven mechanism for superconductivity
• Ubiquitous suppression of the nodal coherent spectral weight in Bi-based cuprates
• Absence of the 1/8 -anomaly in oxygen isotope effect on YBa${}_2$Cu${}_3$O${}_y$
• 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
• Correlation between optical phonon softening and superconducting $T_c$ in YBa${}_2$Cu${}_3$O${}_x$ within $d$-wave Eliashberg theory
• Constrains on s and d components of electron boson coupling constants in one band d wave Eliashberg theory for high Tc superconductors
• Anomalous isotope effect in BCS superconductors with two boson modes
• Doping dependence and multichannel mediators of superconductivity: Calculations for a cuprate model
• Renormalization group approach to anisotropic superconductivity
• Unconventional superconductivity mediated solely by isotropic electron-phonon interaction
• Searching for Superconductivity in High Entropy Oxide Ruddlesden-Popper Cuprate Films
• Electromagnetic response of cuprate superconductors with coexisting electronic nematicity