Dresden 2026 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 23: Correlated Electrons – Poster I

TT 23.35: Poster

Montag, 9. März 2026, 18:00–20:00, P1

Higher-harmonic generation in the driven Mott-Hubbard model — •Abdelrahman Azab, Friedemann Queisser, and Ralf Scheutzhold — Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany

Motivated by recent experiments, we study the generation of higher harmonics in the Mott insulator state of the Fermi-Hubbard model under the influence of an oscillating external electromagnetic field, see also [1]. We find a strong dependence of the higher-harmonic intensity on the spin order (e.g., anti-ferromagnetic versus paramagnetic phase).

Funding by the DFG through the SFB 1242 is gratefully acknowledged.
[1] F. Queisser and R. Schützhold, Phys. Rev. B 109, 205110 (2024).

Keywords: higher harmonics; Fermi-Hubbard model; spin order