Pressure Dependence of Ultrafast Carrier Dynamics in Excitonic Insulator Ta${}_2$NiSe${}_5$

Vikas Arora, Victor S Muthu, Arijit Sinha +3

An excitonic insulator (EI) phase is a consequence of collective many-body effects where an optical band gap is formed by the condensation of electron-hole pairs or excitons. We re…