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American Physical Society, Physical Review B (Condensed Matter), 11(64), 2001

DOI: 10.1103/physrevb.64.115412

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Electron-phonon dynamics in an ensemble of nearly isolated nanoparticles

Journal article published in 2001 by Daniel T. Simon ORCID, Micheal R. Geller
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This paper is available in a repository.

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Abstract

We investigate the electron population dynamics in an ensemble of nearly isolated insulating nanoparticles, each nanoparticle modeled as an electronic two-level system coupled to a single vibrational mode. We find that at short times the ensemble-averaged excited-state population oscillates but has a decaying envelope. At long times, the oscillations become purely sinusoidal about a “plateau” population, with a frequency determined by the electron-phonon interaction strength and with an envelope that decays algebraically as t-1/2. We use this theory to predict electron-phonon dynamics in an ensemble of Y2O3:Eu3+ nanoparticles.