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Identifying the character of ferromagnetic Mn in epitaxial Fe/(Ga,Mn)As heterostructures

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Sperl, Matthias ; Maccherozzi, F. ; Borgatti, F. ; Verna, A. ; Rossi, G. ; Soda, M. ; Schuh, Dieter ; Bayreuther, Günther ; Wegscheider, Werner ; Cezar, J. C. ; Brookes, N. B. ; Back, Christian ; Panaccione, G.
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Date of publication of this fulltext: 22 Mar 2010 07:26


We demonstrate that the growth of Fe/(Ga,Mn)As heterointerfaces can be efficiently controlled by epitaxy and that robust ferromagnetism of the interfacial Mn atoms is induced at room temperature by the proximity effect. X-ray magnetic circular dichroism and x-ray resonant reflectivity data, supported by theoretical calculations, were used to monitor both temperature and magnetic field dependence ...


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