Journal of Vacuum Science & Technology A Vacuum Surfaces and Films · 1986 · 32 citations · 0 references
Natural SciencesChemistryMaterials SciencePhysical ChemistrySurface ChemistrySurface ScienceAdsorption At InterfacesAdsorption ProcessesSolid-gas InterfacesSurface AdsorptionSurface PhysicsSurface ReactionsAdsorbate - Surface InteractionsAdsorbate InteractionsAdsorbate-induced Phase TransitionsAdsorbent InteractionsAdsorption At Gas-solid InterfacesAdsorption MechanismsAdsorption On Metal SurfacesAdsorption On Metals
Coexisting two-dimensional (2D) gas and 2D solid phases of Xe adsorbed on Ag(111), Cu(111), and Ru(001) can be distinguished by means of their Xe(5p) photoemission. The relative equilibrium concentrations (at a given temperature) are substrate dependent and correlate with the xenon–metal interaction strength. Namely, the maximum gas concentration just before 2D phase separation grows with increasing Xe adsorption energy as well as adsorption induced xenon dipole moment in the order Ag(111)<Cu(111)<Ru(001).