The structure of Sb(1 1 1) determined by photoelectron diffraction

The Sb(1 1 1) 4d5/2 core level is found to contain three components. Using photoelectron diffraction, these are assigned to photoemission from the first layer, the second layer and the bulk, respectively. The binding energy for the first and second layer atoms is found to be 120 meV lower and 330 meV higher than for the bulk atoms, respectively. As a by-product of this assignment, the geometric structure of the surface is determined. No substantial relaxations are found.