Inhomogeneity in the ultrafast insulator-to-metal transition dynamics in VO${}_2$

Brian T. O'Callahan, Joanna M. Atkin, Andrew C. Jones +3

The insulator-to-metal transition (IMT) of the simple binary compound of vanadium dioxide VO${}_2$ at $\sim 340$ K has been puzzling since its discovery more than five decades ago. A…