Probing the electron-phonon interaction in correlated systems with coherent lattice fluctuation spectroscopy

Abstract

Tailoring the properties of correlated oxides is accomplished by chemical doping, pressure, temperature or magnetic field. Photoexcitation is a valid alternative to reach out-of-equilibrium states otherwise inaccessible. Here, we quantitatively estimate the coupling between a lattice distortion and the charge-transfer excitation in (La${}_2$CuO${}_{4+\delta }$). We photoinduce a coherent La ion vibration and monitor the response of the optical constants in a broad energy range, providing quantitative information on the electron-phonon matrix element that can be compared to theoretical models. We propose the same methodology to probe electron-electron interactions in other materials.

References in corpus (6)

• Disentangling the electronic and phononic glue in a high-Tc superconductor
• Direct Role of Structural Dynamics in Electron-Lattice Coupling of Superconducting Cuprates
• Witnessing the formation and relaxation of massive quasi-particles in a strongly correlated electron system
• Wavelength dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4
• Charge-transfer exciton in La2CuO4 probed with resonant inelastic x-ray scattering
• Evidence for a Peierls phase-transition in a three-dimensional multiple charge-density waves solid

Cited by in corpus (11)

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• Probing the coupling between a doublon excitation and the charge-density wave in TaS2 by ultrafast optical spectroscopy
• Electron-Phonon-Driven Three-Dimensional Metallicity in an Insulating Cuprate
• Real-time Observation of Phonon-Mediated $\sigma$-$\pi$ Interband Scattering in MgB2
• A tunable time-resolved spontaneous Raman spectroscopy setup for probing ultrafast collective excitation and quasiparticle dynamics in quantum materials
• Excitation of multiple phonon modes in copper metaborate CuB${}_2$O${}_4$ via non-resonant impulsive stimulated Raman scattering
• Lattice-Mediated Magnetic Order Melting in TbMnO3
• Clocking the Onset of Bilayer Coherence in a High-${\mathrm{T}}_{\mathrm{C}}$ Cuprate
• Selective coupling of coherent optical phonons in YBa${}_2$Cu${}_3$O${}_{7-\delta }$ with electronic transitions
• Determination and correction of spectral phase from principal component analysis of coherent phonons
• Coherent generation of symmetry-forbidden phonons by light-induced electron-phonon interactions in magnetite