Determining the electron-phonon coupling in superconducting cuprates by resonant inelastic x-ray scattering: Methods and results on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Nd</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>+</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Ba</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Cu</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mrow><mml:mn>7</mml:mn><mml:mo>−</mml:mo><mml:mi>δ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>
Lucio Braicovich, Matteo Rossi, Roberto Fumagalli, Yingying Peng, Yan Wang, Riccardo Arpaia, Davide Betto, Gabriella M. De Luca, Daniele Di Castro, Kurt Kummer, Marco Moretti Sala, Mattia Pagetti, Giuseppe Balestrino, Nicholas B. Brookes, Marco Salluzzo, Steven Johnston, Jeroen van den Brink, Giacomo Ghiringhelli
Abstract
In this article, the electron phonon coupling $g$ is obtained from Cu L${}_{3}$ RIXS spectra using several methods, all based on the same theoretical approach. The momentum dependence of the coupling for the high-energy (breathing and buckling) branches is measured. The effects of hole doping on the coupling is also explored semi-quantitatively.
Topics & Concepts
CuprateCondensed matter physicsCoupling (piping)PhysicsSuperconductivityMomentum (technical analysis)Spectral linePhononResonant inelastic X-ray scatteringInelastic scatteringDopingHigh-temperature superconductivityElectronInelastic neutron scatteringScatteringAtomic physicsMaterials scienceInductive couplingPhysics of Superconductivity and MagnetismSuperconductivity in MgB2 and AlloysRare-earth and actinide compounds