Photoexcitation of electronic instabilities in one-dimensional charge-transfer systems

Abstract

We investigate the real-time dynamics of photoexcited electronic instabilities in a charge-transfer system model, using the time-dependent density matrix renormalization group method. The model of choice was the quarter-filled one-dimensional extended Peierls-Hubbard Hamiltonian interacting with classical few-cycle electromagnetic radiation. The results show that only one electronic instability drives the main features of the photogenerated time-dependent behavior. Indeed, the photoresponse of the system shows a large enhancement of the $4k_F$ (bond and charge) instability whereas the $2k_F$ state remains largely unaffected. This conclusion holds regardless of the nature of the optical excitations and whether the system is perturbed resonantly or not. Our results suggest potential applications of charge-transfer systems with slow phononic dynamics as optoelectronic switching devices.

9 pages, 6 figures. Slightly modified; published version

References in corpus (8)

• Real time evolution using the density matrix renormalization group
• New Trends in Density Matrix Renormalization
• Coexistence of Charge Order and Spin-Peierls Lattice Distortion in One-Dimensional Organic Conductors
• Enhanced charge order in a photoexcited one-dimensional strongly correlated system
• Photoinduced melting of charge order in a quarter-filled electron system coupled with different types of phonons
• Dynamics of photoexcited states in one-dimensional dimerized Mott insulators
• Optical conductivity of the one-dimensional dimerized Hubbard model at quarter filling
• Charge-Transfer Excitations in One-Dimensional Dimerized Mott Insulators

Cited by in corpus (4)

• Producing Coherent Excitations in Pumped Mott Antiferromagnetic Insulators
• Fluctuating Nature of Light-Enhanced $d$-Wave Superconductivity: A Time-Dependent Variational Non-Gaussian Exact Diagonalization Study
• Nonequilibrium optical response of a one-dimensional Mott insulator
• Transient dynamics of a magnetic impurity coupled to superconducting electrodes: exact numerics versus perturbation theory