Relaxation Dynamics of Photocarriers in One-Dimensional Mott Insulators Coupled to Phonons

Abstract

We examine recombination processes of photocarriers in one-dimensional Mott insulators coupled to phonons. Performing density matrix renormalization group calculations, we find that, even for small electron-phonon coupling, many phonons are generated dynamically, which cause initial relaxation process after the irradiation. At the same time, spin-charge coupling coming from mixing of high- and low-energy states by the irradiation is suppressed. We discuss differences between Mott and band insulators in terms of relaxation dynamics.

5 pages, 3 figures

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• Excitons in the One-Dimensional Hubbard Model: a Real-Time Study
• Coupling-dependent rates of energy transfers from photoexcited Mott insulators to lattice vibrations
• Photo-induced Tomonaga-Luttinger-like liquid in a Mott insulator
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