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arXiv · 1005.1690

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

Hiroaki Matsueda·Shigetoshi Sota·Takami Tohyama·Sadamichi Maekawa
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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.

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Hiroaki Matsueda, Shigetoshi Sota, Takami Tohyama, Sadamichi Maekawa. 2012-02-02. Relaxation Dynamics of Photocarriers in One-Dimensional Mott Insulators Coupled to Phonons. https://doi.org/10.1143/jpsj.81.013701

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