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Epitaxial Fe/Cu/Si(111) ultrathin overlayers with Fe thicknesses ranging from 1 to 3 ML (monolayer) have been grown as well as a 30 ML thick iron film. The evolution of their electronic and magnetic properties next to the iron fcc-bcc structural transition has been investigated by using several UHV techniques and compared to experimental results obtained for a completely bcc Fe/Cu heterostructure...
The surface properties of single crystalline Fe 3 Si(100) have been characterized by AES, UPS, LEED, ISS and XPS measurements. The ideal Fe 3 Si(100) surface may exhibit two possible terminations: pure Fe or mixed Fe/Si (1:1). XPS shows that the thermally equilibrated surface has a larger concentration of Si in the top layers than in the bulk. The thickness of the Si-enriched region...
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