Electron-phonon dynamics in an ensemble of nearly isolated nanoparticles
2001 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 64, 115412-1-115412-5 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
American Physical Society , 2001. Vol. 64, 115412-1-115412-5 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:liu:diva-94193DOI: 10.1103/PhysRevB.64.115412OAI: oai:DiVA.org:liu-94193DiVA: diva2:630182