Exciton Recombination in One-Dimensional Organic Mott Insulators

Abstract

We present a theory for the recombination of (charged) holons and doublons in one-dimensional organic Mott insulators, which is responsible for the decay of a photoexcited metallic state. Due to the charge-spin separation, the dominant mechanism for recombination at low density of charges involves a multi-phonon emission. We show that a reasonable coupling to phonons is sufficient to explain the fast recombination observed by pump-probe experiments in ET-F${}_2$TCNQ, whereby we can also account for the measured pressure dependence of the recombination rate.

5 + 3 pages, 2 figures

References in corpus (3)

• Phonon and Electronic Non-radiative Decay of Excitons in Carbon Nanotubes
• Asymmetry of the electronic states in hole- and electron-doped cuprates: Exact diagonalization study of the t-t'-t''-J model
• Charge Recombination in Undoped Cuprates

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