Atomic-resolution scanning tunnelling microscopic images of the (2 x 1) and c(2 x 2) reconstructions of the (001) surface were studied. It was found that both reconstructions could be described by a structural model in which the surface was terminated by half of a monolayer of 2-fold coordinated Cd atoms. Step edges, domain boundaries and various types of point defect were characterized. The results indicated that the surface atoms were highly mobile at room temperature.

L.Seehofer, G.Falkenberg, R.L.Johnson, V.H.Etgens, S.Tatarenko, D.Brun, B.Daudin: Applied Physics Letters, 1995, 67[12], 1680-2