University of Birmingham > Talks@bham > Condensed Matter Physics Seminars > Exciton-driven quantum phases in correlated insulators

Exciton-driven quantum phases in correlated insulators

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If you have a question about this talk, please contact Mingee Chung.

Collective excitations of bound electron-hole pairs—known as excitons—are ubiquitous in condensed matter and offer a unique platform to discover new many-body physics. Through a plethora of microscopic interactions, bound excitons can drive exotic correlated and topological phases in and out of equilibrium, most of which have remained so far undetected. In this talk, I will describe how advanced ultrafast spectroscopy methods that probe the low (i.e. meV) energy scale of materials are key to uncovering these emergent quantum phases. In particular, I will focus on the tailored driving of spin–orbit-entangled excitons that arise from Zhang-Rice states in correlated insulators. I will show how this excitation protocol enables the realization of an emergent antiferromagnetic metallic phase and the simultaneous coherent manipulation of the underlying magnetic moments. Finally, I will discuss the opportunities offered by the development of novel driving schemes in the terahertz range and their first-time integration into advanced electronic structure probes.

This talk is part of the Condensed Matter Physics Seminars series.

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