We provide a novel experimental method to quantitatively estimate the electron-phonon coupling and its momentum dependence from resonant inelastic x-ray scattering (RIXS) spectra based on the detuning of the incident photon energy away from an absorption resonance. We apply it to the cuprate parent compound NdBa2Cu3O6 and find that the electronic coupling to the oxygen half-breathing phonon branch is strongest at the Brillouin zone boundary, where it amounts to similar to 0.17 eV, in agreement with previous studies. In principle, this method is applicable to any absorption resonance suitable for RIXS measurements and will help to define the contribution of lattice vibrations to the peculiar properties of quantum materials

Experimental Determination of Momentum-Resolved Electron-Phonon Coupling / Rossi, Matteo; Arpaia, Riccardo; Fumagalli, Roberto; Moretti Sala, Marco; Betto, Davide; Kummer, Kurt; De Luca, Gabriella M.; van den Brink, Jeroen; Salluzzo, Marco; Brookes, Nicholas B.; Braicovich, Lucio; Giacomo Ghiringhelli, And. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 123:(2019), p. 027001. [10.1103/PhysRevLett.123.027001]

Experimental Determination of Momentum-Resolved Electron-Phonon Coupling

Riccardo Arpaia;Gabriella M. De Luca;Marco Salluzzo;
2019

Abstract

We provide a novel experimental method to quantitatively estimate the electron-phonon coupling and its momentum dependence from resonant inelastic x-ray scattering (RIXS) spectra based on the detuning of the incident photon energy away from an absorption resonance. We apply it to the cuprate parent compound NdBa2Cu3O6 and find that the electronic coupling to the oxygen half-breathing phonon branch is strongest at the Brillouin zone boundary, where it amounts to similar to 0.17 eV, in agreement with previous studies. In principle, this method is applicable to any absorption resonance suitable for RIXS measurements and will help to define the contribution of lattice vibrations to the peculiar properties of quantum materials
2019
Experimental Determination of Momentum-Resolved Electron-Phonon Coupling / Rossi, Matteo; Arpaia, Riccardo; Fumagalli, Roberto; Moretti Sala, Marco; Betto, Davide; Kummer, Kurt; De Luca, Gabriella M.; van den Brink, Jeroen; Salluzzo, Marco; Brookes, Nicholas B.; Braicovich, Lucio; Giacomo Ghiringhelli, And. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 123:(2019), p. 027001. [10.1103/PhysRevLett.123.027001]
Experimental Determination of Momentum-Resolved Electron-Phonon Coupling / Rossi, Matteo; Arpaia, Riccardo; Fumagalli, Roberto; Moretti Sala, Marco; Betto, Davide; Kummer, Kurt; De Luca, Gabriella M.; van den Brink, Jeroen; Salluzzo, Marco; Brookes, Nicholas B.; Braicovich, Lucio; Giacomo Ghiringhelli, And. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 123:(2019), p. 027001. [10.1103/PhysRevLett.123.027001]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/757000
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