Relaxation timescales and electron-phonon coupling in optically pumped YBa2Cu3O6+x revealed by time-resolved Raman scattering
Source abstract
Abstract
Time-resolved measurements provide a new way to disentangle complex interactions in quantum materials due to their different timescales. We used pump-probe Raman scattering to investigate the apical oxygen vibration in $\mathrm{YBa_2Cu_3O_{6+\mathcal{x}}}$ under nonequilibrium conditions. Time dependence of the phonon population demonstrated strong electron-phonon coupling. Most importantly, the phonon shifts to a higher energy due to transient smearing of the Fermi surface in a remarkable agreement with diagrammatic theory. Here we also discuss insights into photoinduced superconductivity reported at lower doping that follow from these results.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Advanced Condensed Matter Physics · Magnetic properties of thin films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
Center for Experiments on Quantum Materials, University of Colorado, Boulder, Colorado 80309, USA
Department of Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706, USA
Department of Physics and Mathematics, University of Wisconsin–Parkside, Kenosha, Wisconsin 53140, USA
Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
Funding
National Science Foundation · U.S. Department of Energy · WiSys Technology Foundation
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