In this study, the work function difference between the two terminations of SrTiO3 (STO) is investigated. The two terminations i.e. SrO and TiO2 are formed by annealing the STO sample at 1200°C for...Show moreIn this study, the work function difference between the two terminations of SrTiO3 (STO) is investigated. The two terminations i.e. SrO and TiO2 are formed by annealing the STO sample at 1200°C for 12 hours in air at ambient pressure. To collect more information about this perovskite oxide, we study this material in AFM and LEEM.We distinguish the two terminations, calculate the step heights between the unit cells and record LEEM Multi dark-field images showing different surface reconstructions. To measure the work function difference, three methods are used: Energy-filtered PEEM, Intensity-Voltage curves and the comparison between LEEM real-space data and simulations. All methods showed that the work function difference is lower than predicted by theory.Show less