Photoinduced charge carrier dynamics in Hubbard two-leg ladders and chains

Abstract

The charge carrier dynamics of doped electronic correlated systems on ladders and chains, subject to ultrafast photoirradiation, is investigated using the time-dependent Lanczos method. The time-resolved optical conductivity and the temporal profiles of other relevant quantities, including the doublon number, the kinetic energy, and the interaction energy, are calculated. Two competitive factors that can influence the transient charge carrier dynamics are identified as the thermal effect and the charge effect. We demonstrate that the analysis of their interplay can provide an intuitive way to understand the numerical results and the recent optical pump-probe experiment on a two-leg ladder cuprate.

arXiv comment8 pages, 5 figures

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Cited by in corpus (7)

• High-harmonic generation approaching the quantum critical point of strongly correlated systems
• Nonequilibrium steady-state theory of photodoped Mott insulators
• Glassy dynamics of the one-dimensional Mott insulator excited by a strong terahertz pulse
• Anomalous suppression of photo-induced in-gap weight in the optical conductivity of a two-leg Hubbard ladder
• Site-selective doublon-holon dynamics in a pumped one-dimensional Hubbard superlattice with staggered Coulomb interactions
• Optical absorption activated by an ultrashort half-cycle pulse in metallic and superconducting states of the Hubbard model
• Low-energy photoexcitations inside the Mott gap in doped Hubbard and t-J ladders