2019/08/31 by Laurent P. René de Cotret, Jan-Hendrik Pöhls, Jan‐Hendrik Pöhls +5 · 55 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Brillouin zone #Charge carrier #Condensed matter physics #Electron #Electronic and Structural Properties of Oxides #Phonon #Phonon scattering #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Scattering #Superconductivity #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.100.214115
published in Physical review. B./Physical review. B 100(21) (American Physical Society) · 14 pages, 7 figures. Includes appendices
arxiv created 2019/11/09 · openalex publication_date 2019/12/19 · arxiv updated 2019/12/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The coupling within and between lattice and charge degrees of freedom is central to a diverse range of transport and ordering phenomena in materials, from superconductivity to charge density waves. Here, the authors show how ultrafast electron diffuse scattering (UEDS) tracks energy flows -- across the entire Brillouin zone -- between electrons and phonons and within the phonon system itself. The nonequilibrium phonon populations determined by UEDS are used to extract momentum- and mode-dependent electron-phonon and phonon-phonon coupling constants.