Dynamics and fractionalization in spin-orbit entangled matter (C03)

• Subject Area: Theoretical Condensed Matter Physics
• Term: since 2016
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 277146847

Fractionalization is a key example for the exotic phenomena offered by quantum many-body systems, and a defining characteristic of spin liquids. Their dynamics out-of-equilibrium are little explored to date. Our goals are twofold: (i) To uncover spectroscopic signatures of such states, for which we will study pump-probe spectroscopy of gapless Dirac spin liquids, and simulate novel 2D coherent spectroscopy protocols for quantum magnets. (ii) To develop a field theoretical framework for the dynamics of driven open systems, applying it to both optically driven TiSe2, and to investigate the possibility of inducing spin liquids by optical pumping of Kitaev-Heisenberg models.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1238: Control and Dynamics of Quantum Materials
• Applicant Institution: Universität zu Köln
• Project Heads: Professor Dr. Sebastian Diehl; Dr. Ciarán Hickey, from 7/2020 until 12/2022; Dr. Urban Seifert; Professor Dr. Simon Trebst