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.

arXiv comment5 pages, 3 figures

References in corpus (22)

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Cited by in corpus (51)

• 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
• Bosons in high temperature superconductors: an experimental survey
• Photoemission kinks and phonons in cuprates
• Intermediate Coupling Model of the Cuprates
• Low-energy (< 10 meV) feature in the nodal electron self-energy and strong temperature dependence of the Fermi velocity in Bi(2)Sr(2)CaCu(2)O(8+delta)
• Unmasking the Origin of Kinks in the Photoemission Spectra of Cuprate Superconductors
• Mode-selective coupling of coherent phonons to the Bi2212 electronic band structure
• Giant electron-phonon anomaly in doped La2CuO4 and other cuprates
• The impact of dynamical screening on the phonon dynamics of LaCuO
• Polaronic metal in lightly doped high-Tc cuprates
• Coupling of Low Energy Electrons in Optimally Doped Bi2212 to an Optical Phonon Mode
• Properties of the phonon-induced pairing interaction in YBa${}_2$Cu${}_3$O${}_7$ within the local density approximation
• Optical conductivity of doped Mott insulator: the interplay between correlation and electron-phonon interaction
• Broken relationship between superconducting pairing interaction and electronic dispersion kinks in LSCO
• 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${}_{8+\delta }$
• Electron-boson glue function derived from electronic Raman scattering
• Phonon origin of low energy and high energy kinks in high temperature cuprate superconductors
• Direct observation of self energy signatures of the resonant collective mode in Bi2Sr2CaCu2O8
• Density of States Modulations from Oxygen Phonons in d-wave Superconductors: Reconciling Angle-Resolved Photoemission Spectroscopy and Scanning Tunneling Microscopy
• The isotope effect in the Hubbard model with local phonons
• Ultrafast spectroscopy of quasiparticle dynamics in cuprate superconductors
• Low-energy kink in the nodal dispersion of copper-oxide superconductors: Insights from Dynamical Mean Field Theory
• Large momentum-dependence of the main dispersion "kink" in the high-Tc superconductor Bi2Sr2CaCu2O8+δ
• Translational-invariant bipolarons and superconductivity
• THz phonon spectroscopy of doped superconducting cuprates
• Anisotropic dressing of electrons in electron-doped cuprate superconductors
• Isotope Effect on Electron-Phonon Interaction in Multiband Superconductor MgB2
• Self Energy and Fluctuation Spectra in Cuprates: Comparing Optical and Photoemission Results
• Influence of correlations on transitive electron-phonon couplings in cuprate superconductors
• Coherent Charge and Spin Density Waves in Underdoped HgBa${}_2$CuO${}_{4+\delta }$
• 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
• Isotope effect on the superfluid density in conventional and high-temperature 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
• Renormalization group approach to anisotropic superconductivity
• Doping dependence and multichannel mediators of superconductivity: Calculations for a cuprate model
• Isotope Effect of Underdoped Cuprates in the Yang-Rice-Zhang Model
• Role of the upper branch of the hour-glass magnetic spectrum in the formation of the main kink in the electronic dispersion of high-T${}_{\text{c}}$ cuprate superconductors
• Unconventional superconductivity mediated solely by isotropic electron-phonon interaction
• Electromagnetic response of cuprate superconductors with coexisting electronic nematicity
• Searching for Superconductivity in High Entropy Oxide Ruddlesden-Popper Cuprate Films
• Fermi arcs and isotope effect of the magnetic penetration depth in underdoped cuprates