TY - JOUR
T1 - Relaxation dynamics of photocarriers in one-dimensional mott insulators coupled to phonons
AU - Matsueda, Hiroaki
AU - Sota, Shigetoshi
AU - Tohyama, Takami
AU - Maekawa, Sadamichi
PY - 2012/1
Y1 - 2012/1
N2 - 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.
AB - 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.
KW - Density matrix renormalization group method
KW - Photoinduced phase transition
KW - Pump-probe reflection spectroscopy
KW - Strongly correlated electron systems
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U2 - 10.1143/JPSJ.81.013701
DO - 10.1143/JPSJ.81.013701
M3 - Article
AN - SCOPUS:84855266324
SN - 0031-9015
VL - 81
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 1
M1 - 13701
ER -