Melting of excitonic insulator phase by an intense terahertz pulse in Ta${}_2$NiSe${}_5$

Naoki Takamura, Tatsuya Miyamoto, Ryohei Ikeda +9

In this study, the optical response to a terahertz pulse was investigated in the transition metal chalcogenide Ta${}_2$NiSe${}_5$, a candidate excitonic insulator. First, by irradiatin…