Imaging the coherent propagation of collective modes in the excitonic insulator candidate Ta$_2$NiSe$_5$ at room temperature

25 Mar 2020 Andrich Paolo Bretscher Hope M. Murakami Yuta Golež Denis Remez Benjamin Telang Prachi Singh Anupam Harnagea Luminita Cooper Nigel R. Millis Andrew J. Werner Philipp Sood A. K. Rao Akshay

Excitonic insulating (EI) materials are predicted to host a condensate of electron-hole pairs in their ground state, giving rise to collective many-body effects. Although several bulk materials have been proposed as EIs recently, a direct observation of the characteristic collective behavior is still missing... (read more)

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  • STRONGLY CORRELATED ELECTRONS
  • MESOSCALE AND NANOSCALE PHYSICS