English, Article edition: THE Fe ULTRATHIN FILM ON ZnO(000-1) SURFACE: GROWTH, STRUCTURE, AND INTERACTION GUO-DONG WANG; FA-QIANG XU; WANG ZHANG; ...

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Physical Description
  • article
Language
  • English

Edition details

Title
  • THE Fe ULTRATHIN FILM ON ZnO(000-1) SURFACE: GROWTH, STRUCTURE, AND INTERACTION
Author
  • GUO-DONG WANG
  • FA-QIANG XU
  • WANG ZHANG
  • WEN-HUA ZHANG
  • ZONG-MU LI
Physical Description
  • article
Notes
  • We report the electronic structure of the interface of the ultrafilm Fe film with the O-terminated ZnO(000-1) polar surface studied by synchrotron radiation photoemission. It was found that Fe grows in a StranskiâKrastanov mode. The turning point of the growth mode was at the Fe coverage of ~2 Ã…. At low coverage, about 1 ML (monolayer) of iron (ca. 1.5 Ã…) was oxidized by the terminative oxygen atoms on the ZnO(000-1) surface. Analysis of the valence band and the Fe3p photoemission spectra indicates that below 2 Ã… coverage, only Fe2+ species could be detected at the Fe/​ZnO interface, after that the formation of a metallic iron overlayer was observed. A sharp Fermi edge appeared at 5.1 Ã… coverage, indicating the formation of the bulk metallic Fe film. Furthermore, work function of the sample decreased to a minimum of 4.5 eV at 0.2 Ã… Fe, and then to 4.9 eV with the formation of a dipole layer at the interface.
  • Fe/​ZnO interface, synchrotron radiation photoemission spectroscopy (SRPES), work function
  • RePEc:wsi:srlxxx:v:15:y:2008:i:03:p:295-300
Language
  • English
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