Structural Instability of Ferromagnetic fcc Fe Films on Cu(100)
- 30 January 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 74 (5) , 765-768
- https://doi.org/10.1103/physrevlett.74.765
Abstract
Ultrathin fcc Fe films on Cu(100) up to 5 monolayers (ML) show a peculiar structural arrangement that is intimately linked with the ferromagnetic coupling within the film. Our structural analysis of the 5 × 1 phase finds an increased atomic volume in combination with a complex reconstruction pattern with sinusoidal shifts and vertical buckling. The atomic configuration differs considerably from the bulklike structure of the interior of antiferromagnetic Fe films above 5 ML. This points towards a structural instability of the ferromagnetic fcc phase.Keywords
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