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

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

2010-05-10

arxiv.org/abs/1005.1690v3

J. Phys. Soc. Jpn. 81, 013701 (2012)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1143/JPSJ.81.013701

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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