Photoinduced charge and spin dynamics in strongly correlated electron systems

Abstract

Motivated by photoinduced phase transition in manganese oxides, charge and spin dynamics induced by photoirradiation are examined. We calculate the transient optical absorption spectra of the extended double-exchange model by the density matrix renormalization group (DMRG) method. A charge-ordered insulating (COI) state becomes metallic just after photoirradiation, and the system tends to recover the initial COI state. The recovery is accompanied with remarkable suppression of an antiferromagnetic correlation in the COI state. The DMRG results are consistent with recent pump-probe spectroscopy data.

5 pages, 4 figures

References in corpus (4)

• Real time evolution using the density matrix renormalization group
• Time-step targetting methods for real-time dynamics using DMRG
• Ultrafast Photoinduced Formation of Metallic State in a Perovskite-type Manganite with Short Range Charge and Orbital Order
• Dynamics of photoexcited states in one-dimensional dimerized Mott insulators

Cited by in corpus (1)

• Polaronic states with Spin-Charge-Coupled Excitation in a 1D Mott Insulator K-TCNQ