An investigation of structural details for the Cu(110)-((22)(-11))-P reconstructed surface

An exhaustive tensor LEED study for the half monolayer (ML) structure formed by P at the (110) surface of copper confirms the reconstruction reported earlier [Chem. Phys. 198, 235 (1995)]. All P atoms occupy identical six-coordinate sites; the reconstruction involves 0.25 ML of ’’added Cu’’ atoms at hollow sites, each bonded to two neighboring P atoms, which line up along the [<(1)over bar12>] direction. Appreciable relaxations, both vertical and lateral, are identified for atoms in the first four layers. The new feature found here is that the displacements indicated by tensor LEED for individual atoms appear to follow trends that are broadly consistent with reasonable structural chemical principles.