Evidence for aC60Monolayer Intercalated between a Graphite Monolayer and Iridium

High-resolution Auger-electron spectroscopy has revealed intercalation of a graphite monolayer on iridium by ${\mathrm{C}}_{60}$ molecules from a thick deposited film, which occurs at $T\sim 800$ K. At $T\sim 1200$ K, the ${\mathrm{C}}_{60}$ molecules contacting with iridium under the graphite film breakup. The carbon thus formed migrates at 1600 K to the opposite side of the Ir ribbon undergoes graphitization at 1900 K, and desorbs at 2200 K.