Homoepitaxial growth of Pd on Pd(111) - a search for the contribution of electronic surface states to the Ehrlich-Schwoebel barrier
The growth of Pd on clean and oxygen precovered Pd(111) is studied by scanning tunneling microscopy. At 400 K, an almost ideal kinetically controlled multilayer 3-dimensional growth is observed. A reduction of the deposition temperature to 300 K yields a flatter film morphology. Preadsorption of oxygen also flattens the film morphology at 400 K. The behaviour is qualitatively similar to Pt/Pt(111), although quantitative differences exist. These differences are compatible with (but do not prove) a contribution of the occupied free-electron-like surface state of Pt(111) to the Ehrlich-Schwoebel barrier for interlayer diffusion.
Bibliographic Reference: Article: Surface Science, Vol. 402-404 (1998) pp. 277-280
Record Number: 199811413 / Last updated on: 1998-11-10
Original language: en
Available languages: en