Substrate tuning of the structural and electronic transition in thin flakes of the excitonic insulator candidate Ta${}_2$NiSe${}_5$

Yuan-Shan Zhang, Zichen Yang, Chuanlian Xiao +4

Ta${}_2$NiSe${}_5$ continues to draw interest for its 326 K phase transition, whose dual electronic and structural nature reflects a complex interplay of electron-hole (excitonic) and…