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Phys. Rev. Lett. 95, 087601 (2005) [4 pages]

Surface Structure of Ultrathin Fe Films on Cu(001) Revisited

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T. Bernhard, M. Baron, M. Gruyters, and H. Winter*
Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin-Adlershof, Germany

Received 24 May 2005; published 18 August 2005

The structure and magnetism of ultrathin Fe films epitaxially grown on a Cu(001) surface are investigated by grazing scattering of fast H and He atoms or ions. By making use of a new variant of ion beam triangulation based on the detection of the number of emitted electrons, we obtain direct information on the structure of the film surface. We observe for room temperature growth a dominant and defined fcc-like structure. Complex surface reconstructions as reported in recent STM and LEED studies are observed only for cooling and H2 dosing.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.087601
DOI:
10.1103/PhysRevLett.95.087601
PACS:
79.20.Rf, 68.55.−a, 75.70.−i

*Author to whom correspondence should be addressed.

Electronic address: winter@physik.hu-berlin.de