Nonequilibrium dynamics in pumped Mott insulators

Abstract

We use time-evolution techniques for (infinite) matrix-product-states to calculate, directly in the thermodynamic limit, the time-dependent photoemission spectra and dynamic structure factors of the half-filled Hubbard chain after pulse irradiation. These quantities exhibit clear signatures of the photoinduced phase transition from insulator to metal that occurs because of the formation of so-called $\eta$ pairs. In addition, the spin dynamic structure factor loses spectral weight in the whole momentum space, reflecting the suppression of antiferromagnetic correlations due to the buildup of $\eta$-pairing states. The numerical method demonstrated in this work can be readily applied to other one-dimensional models driven out of equilibrium by optical pumping.

arXiv comment6 pages, 5 figures + 4 pages supplemental material

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Cited by in corpus (5)

• Excitonic effects on high-harmonic generation in Mott insulators
• Spin, charge and $\eta$-spin separation in one-dimensional photo-doped Mott insulators
• Photoinduced metallization of excitonic insulators
• Light-wave coherent control of the insulator-to-metal transition in a strongly correlated material
• Photoinduced pairing in Mott insulators