Alkali Metals on Ultrathin Oxide Surface: A Low-Temperatrue STM research

Alkali metal plays an important role in heterogeneous catalysis, semiconductor physics, superconducting physics and has received extensive attention in its adsorption behavior and electronic properties on both single crystal surface and oxide surface. In this report, a low-temperature scanning tunneling microscopy (LT-STM) is employed to investigate the behavior of alkali metal on ultrathin CuO surfaces. While the electronic properties of some transtional metals atoms on such an oxide surface can be dramaticly affected by the co-adsorption alkali metals.