Maccherozzi, F. and Panaccione, G. and Rossi, G. and Hochstrasser, M. and Sperl, Matthias and Reinwald, Matthias and Woltersdorf, Georg and Wegscheider, Werner and Back, Christian (2007) Surface treatments and magnetic properties of Ga1−xMnxAs thin films. Surface Science 601 (18), pp. 4283-4287.
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As a diluted magnetic semiconductor (DMS), (Ga,Mn)As is a possible candidate for the realization of spintronics devices, due to its intrinsic compatibility with GaAs based electronics. The low Curie temperature still limits its use for practical devices. Despite the huge knowledge on GaAs surface, the (Ga,Mn)As surface is still not well understood and difficult to handle. Standard surface cleaning techniques have many drawbacks, mainly because thermal treatments changes crystal structure. We will compare the magnetic and spectroscopic properties of differently processed (Ga,Mn)As surfaces with X-ray photoemission (XPS), X-ray absorption (XAS) and X-ray magnetic circular dichroism (XMCD). Samples as-grown, chemically etched, Ar+ sputtered and annealed in oxygen will be compared.
|Date:||15 September 2007|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Keywords:||X-ray photoelectron spectroscopy; X-ray absorption spectroscopy; Magnetic interfaces; (Ga,Mn)As|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||08 Feb 2010 13:26|
|Last Modified:||20 Jul 2011 22:19|