Importance of the surface electronic structure in heteroepitaxy

Herbert Wormeester, E. Huger, E. Bauer

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Thin Au and Pd films were deposited on a Nb(001) surface covered with a monolayer (ML) of the respective metal and on a S-terminated Nb. Although these ML's have the same lateral periodicity as the substrate, the films grown on them have a different structure. Films deposited on the metal-terminated Nb surface have a structure determined by the geometric misfit between substrate and deposit (Au bcc, Pd hcp) while all films grown on the S-terminated Nb surface are fcc with (111) orientation. Photoelectron spectroscopy shows that S changes the electron density of states at the surface in such a way that the bonding of the metal is weakened, resulting in nonwetting.
Original languageUndefined
Pages (from-to)854-857
Number of pages4
JournalPhysical review letters
Issue number4
Publication statusPublished - 1998


  • METIS-128687
  • IR-61210

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