Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 7: Poster Magnetism I
MA 7.29: Poster
Monday, March 9, 2026, 09:30–12:30, P2
Equilibrium control of quantum magnets via cavity magneto-electric coupling — •Nicolas Schmölz1, Beatriz Pérez González2, Mónica Benito2, Marcus Kollar1, and Francesco Piazza1 — 1Theoretische Physik III, University of Augsburg — 2Quanteninformation und Quantencomputing, University of Augsburg
We investigate the possibility of exploiting a cavity magneto-electric coupling mechanism, whereby spin excitations carry an electric dipole moment, in order to enhance the interactions between photons and correlated (quantum) magnets.
The free-energy of the material is modified by the hybridization between collective spin excitations and cavity photons. We provide estimates for the change in free energy for specific materials which are solely based on experimental input via the measurement of the optical conductivity and the magnetoelectric response.
Our results should guide future experimental realizations by identifying optimal magnetic materials and cavity designs, aiming at a non-invasive equilibrium control of material's phases and functionalities.
Keywords: Cavity QED; Spin-Photon Coupling