Surface structure determination of CeO2(001) by angle-resolved mass spectroscopy of recoiled ions

Angle-resolved mass spectroscopy of recoiled ions data was obtained for the CeO2(001) surface. Prior theoretical investigations have suggested that the (1x1) unreconstructed surface, terminated with bulk equivalent layers of either cerium or oxygen, is unstable due to a nonzero surface dipole. In this investigation, it was experimentally determined that the surface is terminated with 0.5 monolayers of oxygen. This model results in a stable surface with a zero dipole moment. copyright 1999 The American Physical Society