Crystallographic Structure of Ultrathin Fe Films on Cu(100)

Albert Biedermann, Rupert Tscheließnig, Michael Schmid, and Peter Varga
Phys. Rev. Lett. 87, 086103 – Published 3 August 2001
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Abstract

We report the observation of bcc-like crystal structures in 2–4 monolayer (ML) Fe films grown on fcc Cu(100) using scanning tunneling microscopy. The local bcc structure provides a straightforward explanation for their frequently reported outstanding magnetic properties, i.e., ferromagnetic ordering in all layers with a Curie temperature above 300K. The nonpseudomorphic structure, which becomes pseudomorphic above 4 ML film thickness, is unexpected in terms of conventional rules of thin film growth and stresses the importance of finite thickness effects in ferromagnetic ultrathin films.

  • Received 22 February 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.086103

©2001 American Physical Society

Authors & Affiliations

Albert Biedermann, Rupert Tscheließnig, Michael Schmid, and Peter Varga

  • Institut für Allgemeine Physik, Vienna University of Technology, A-1040 Vienna, Austria

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Issue

Vol. 87, Iss. 8 — 20 August 2001

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