Sensing ultrashort electronic coherent beating at conical intersections by single-electron pulses.
basic_science · Level V
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- Record sourced from PubMed, PMID 35609200.
- Also identified by DOI 10.1073/pnas.2205510119 and PMC identifier 9295798.
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Abstract
SignificanceIn a theoretical study, we present an ultrafast technique for probing time-dependent molecular charge densities. An ultrafast optical pump first brings the molecule into an electronic nonstationary state. This is followed by coherent inelastic scattering of a broadband single-electron probe pulse with a variable delay <i>T</i>, which is detected spectrally. The technique is applied to reveal phase-sensitive background-free coherent electron beating in the conical intersection passage in uracil and reveals the otherwise elusive coherent beating of strongly coupled electrons and nuclei.