Charge carrier dynamics in semiconducting mercury cluster anions

Ryan M. Young, Graham B. Griffin, Oli T. Ehrler, Aster Kammrath, Arthur E. Bragg, Jan R R Verlet, Ori Cheshnovsky, Daniel M. Neumark

    Research output: Contribution to journalArticlepeer-review

    7 Scopus citations

    Abstract

    We have examined size-dependent electronic relaxation dynamics in isolated semiconducting mercury cluster anions using time-resolved photoelectron imaging. Relaxation following excitation from within the conduction (p-) band occurs on an ∼3-40 ps timescale and is attributed to non-adiabatic relaxation through the p-band. Exciting an electron from the valence (s-) band into the conduction band creates an electron-hole pair that relaxes prior to Auger emission. The dynamics associated with this feature occur on an ∼500 fs timescale and are attributed to either a hole-induced contraction of the cluster or electron-electron scattering.

    Original languageEnglish (US)
    Article number048102
    JournalPhysica Scripta
    Volume80
    Issue number4
    DOIs
    StatePublished - 2009

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Mathematical Physics
    • Condensed Matter Physics

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