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Theoretical study of thin Fe films deposited on a Cr(001) substrate: Step-induced extended defects D. Stoefflera, * and F. Gautiera a IPCMS-GEMME (UMR 46 du CNRS), 23 rue du Loess F-67037 Strasbourg France Available online 8 December 1999.
D. Stoefflera, * and F. Gautiera
In this paper we present a theoretical study of the magnetic properties of a few Fe monolayers deposited on a Cr(001) substrate containing monatomic steps. We use the real space recursion method in a tight binding framework to determine the electronic structures of non-periodic systems involving large numbers of inequivalent atoms (up to 1130). We investigate the nature of the magnetic defects induced in the Cr spacer layer by interfacial steps in relation to recent experiments. We show that even if a multidomain magnetic configuration of the Fe overlayer is the most favoured one without an external applied field, defects can link two successive steps for thick Fe overlayers and rough interfaces.
*Corresponding author.
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