Regensburg 2025 – scientific programme
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MA: Fachverband Magnetismus
MA 15: Poster I
MA 15.34: Poster
Tuesday, March 18, 2025, 10:00–12:30, P1
Two-dimensional coherent spectroscopy as a probe for spin-1 single ion bound states — •Sagar Ramchandani1, Yoshito Watanabe1, Simon Trebst1, and Ciarán Hickey2,3 — 1Institute for Theoretical Physics, University of Cologne, 50937 Cologne, Germany — 2School of Physics, University College Dublin, Belfield, Dublin 4, Ireland — 3Centre for Quantum Engineering, Science, and Technology, University College Dublin, Dublin 4, Ireland
Nonlinear spectroscopy has emerged as a powerful prospect to probe quantum magnets by extracting information from higher-order responses. In this work, we report on the implementation of 2-dimensional coherent spectroscopy (2DCS) in the context of the Su(n)ny Julia package for modelling atomic-scale magnetism. We employ this code (and its semi-classical approach) to study the properties of spin-1 single ion bound states (SIBS), motivated in part by recent experiments on FeI2.
Keywords: nonlinear spectroscopy; single ion bound states; two-dimensional coherent spectroscopy