SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 42: Poster: Correlated Electrons I

TT 42.12: Poster

Mittwoch, 29. März 2023, 15:00–18:00, P2/OG2

From linear to circular polarized light - Floquet engineering in Kitaev-Heisenberg materials with Lissajous figures — •Pascal Strobel1 and Maria Daghofer1,21Institute for Functional Matter and Quantum Technologies, University of Stuttgart, 70550 Stuttgart, Germany — 2Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany

Floquet engineering is a promising tool for tuning magnetic interactions in the candidate Kitaev material α-RuCL3. Amplitude and frequency of the time periodic light field are able to modulate both sign and strength of Kitaev-, Heisenberg-, and Γ-interactions present in α-RuCl3. This paves the way of possibly driving α-RuCL3 into the sought after Kitaev spin-liquid phase.

We want to discuss possibilities of Floquet engineering with arbitrary polarized light in α-RuCl3. In order to do so, we describe the influence of arbitrary polarization via an effective model including Lissajous figures. This model is derived via perturbation theory up to fourth order. Starting from linear and circular polarized light we bridge the gap between those two limiting cases. Moreover we study more complex Lissajous figures and general trends arising for them.

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