Epitaxial Stabilization and Emergent Charge Order in Copper Selenide Thin Films

B. M. Sharif, B. Theunissen, C. Westbrook +5

We demonstrate epitaxial growth of copper selenide (Cu${}_{2-x}$Se) thin films in both cubic and rhombohedral phases, achieved via molecular beam epitaxy on Al${}_2$O${}_3$ (001) substra…