Experimental Determination of Momentum-Resolved Electron-Phonon Coupling
Artikel i vetenskaplig tidskrift, 2019

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 ∼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.

Författare

Matteo Rossi

Politecnico di Milano

Max-Planck-Gesellschaft

Riccardo Arpaia

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Politecnico di Milano

Roberto Fumagalli

Politecnico di Milano

Marco Moretti Sala

Politecnico di Milano

Davide Betto

European Synchrotron Radiation Facility (ESRF)

Kurt Kummer

European Synchrotron Radiation Facility (ESRF)

Gabriella M. De Luca

Universita degli Studi di Napoli Federico II

CNR - SuPerconducting and other INnovative materials and devices institute, Napoli

J. van den Brink

Technische Universität Dresden

Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden

Marco Salluzzo

CNR - SuPerconducting and other INnovative materials and devices institute, Napoli

Nicholas B. Brookes

European Synchrotron Radiation Facility (ESRF)

Lucio Braicovich

Politecnico di Milano

European Synchrotron Radiation Facility (ESRF)

Giacomo Ghiringhelli

Politecnico di Milano

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 123 2 027001

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik

DOI

10.1103/PhysRevLett.123.027001

Mer information

Senast uppdaterat

2019-11-19