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

Sperl, Matthias and Maccherozzi, F. and Borgatti, F. and Verna, A. and Rossi, G. and Soda, M. and Schuh, Dieter and Bayreuther, Günther and Wegscheider, Werner and Cezar, J. C. and Brookes, N. B. and Back, Christian and Panaccione, G. (2010) Identifying the character of ferromagnetic Mn in epitaxial Fe/(Ga,Mn)As heterostructures. Physical Review B (PRB) 81, 035211.

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Other URL: http://prb.aps.org/abstract/PRB/v81/i3/e035211

Abstract

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 of the Mn magnetic moment in the semiconducting host. We identify distinct Mn populations, each of them with specific magnetic character.

Item Type:	Article
Institutions:	Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Günther Bayreuther Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider
Projects:	SFB 689: Spinphänomene in reduzierten Dimensionen
Subjects:	500 Science > 530 Physics
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Owner:	Webmaster Back
Deposited On:	22 Mar 2010 08:26
Last Modified:	27 Aug 2012 13:33
Item ID:	13651