Time evolution of the elementary excitations in a photo-excited electron-doped cuprate via tr-RIXS

ORAL

Abstract

Investigating the ultrafast dynamics in photo-excited quantum materials is a topic of strong interest in materials science research. To date, available time-resolved probes have revealed information about the lattice, symmetry, and electronic band structure. However, the information about the collective excitations in energy-momentum space, such as magnons and plasmons, are largely unavailable due to the lack of a suitable method. The advent of high repetition rate x-ray free-electron lasers enables time-resolved resonant inelastic scattering (RIXS) experiments, which accesses elementary excitations associated with the magnetic, charge, orbital, and lattice degrees of freedom, thus providing the previously missing pieces of information. In this presentation, I will present our tr-RIXS measurement on the electron-doped cuprates Nd2-xCexCuO4. A photoexcitation-induced, change of the paramagnon, plasmon, and orbital excitations spectrum were observed. The momentum and time dependence will be discussed.

*This work is supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, under contract DE-AC02-76SF00515.

–

Presenters

  • Wei-Sheng Lee

    • SLAC - Natl Accelerator Lab

Authors

  • Wei-Sheng Lee

    • SLAC - Natl Accelerator Lab

  • Daniel Jost

    • Stanford University

  • Jiarui Li

    • Stanford University
    • SLAC - Natl Accelerator Lab
    • Massachusetts Institute of Technology MI
    • Massachusetts Institute of Technology

  • Jonathan A Sobota

    • Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory

  • Leonardo Martinelli

    • Politecnico di Milano Univ

  • Giacomo Merzoni

    • European XFEL

  • Justine Schlappa

    • European XFEL
    • European XFEL, 22869 Schenefeld, Germany

  • Andreas Scherz

    • European XFEL
    • European XFEL, 22869 Schenefeld, Germany

  • Robert Carley

    • European XFEL
    • European XFEL, 22869 Schenefeld, Germany

  • Benjamin Van Kuiken

    • European XFEL

  • Teguh C Asmara

    • Paul Scherrer Institute
    • European XFEL

  • Le Phuong Hoang

    • European XFEL GmbH
    • European XFEL

  • Laurent Mercadier

    • European XFEL
    • European XFEL, 22869 Schenefeld, Germany

  • Martin Teichmann

    • European XFEL
    • European XFEL, 22869 Schenefeld, Germany

  • Kejun Xu

    • Stanford
    • Stanford University

  • Patrick S Kirchmann

    • SLAC - Natl Accelerator Lab
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory

  • Georgi Dakovski

    • SLAC National Accelerator Laboratory

  • Giacomo Ghiringhelli

    • Politecnico di Milano Univ

  • Brian Moritz

    • SLAC National Accelerator Laboratory

  • Zhi-Xun Shen

    • Stanford University
    • stanford university

  • Thomas P Devereaux

    • Stanford University

  • Wei-Sheng Lee

    • SLAC - Natl Accelerator Lab