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  • Letter
  • Open Access

Nonequilibrium dynamics in pumped Mott insulators

Satoshi Ejima*, Florian Lange, and Holger Fehske

  • Institut für Physik, Universität Greifswald, 17489 Greifswald, Germany

  • *ejima@physik.uni-greifswald.de
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Phys. Rev. Research 4, L012012 – Published 9 February, 2022

DOI: https://doi.org/10.1103/PhysRevResearch.4.L012012

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 η 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 η-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.

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Phys. Rev. Research 4, L012012– Published 9 February, 2022
  • Received 11 October 2021
  • Revised 6 January 2022
  • Accepted 7 January 2022
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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