DSpace - Tor Vergata: Item 2108/1214

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Title:	Dilute magnetic semiconductors: the role of Mn in GaMnAs(001) and Mn/GaAs(001) surfaces
Authors:	Balzarotti, Adalberto Thorpe, Stephen Denny
Keywords:	dilute magnetic semiconductors
Issue Date:	15-Mar-2010
Abstract:	The study of interfaces between magnetic materials and semiconductors is fundamental for the development of spintronics devices as spin injection blocks. For this reason the growth of Mn-based magnetic alloys on III-V semiconductors, in particular on GaAs is an interesting topic both from theoretical and technological point of views [1]. Moreover, the investigation of the GaMnAs(001) and the Mn/GaAs(001) surfaces is essential to understand the growth process of GaMnAs itself, a prototypical diluted magnetic semiconductor. In fact, the mechanism of interstitial Mn sites defects formation is not well understood as well as the structure of the GaMnAs(001)(1×2) surface; furthermore the Mn adsorption site could play a fundamental role [2]. As a last point it has been experimentally demonstrated that Mn acts as surfactant in the growth process of InAs quantum dots on GaAs [3]. In this thesis the growth and the characterization of the GaMnAs(001) and the Mn/GaAs(001) surfaces are reported....
Description:	22. ciclo
URI:	http://hdl.handle.net/2108/1214
Appears in Collections:	Tesi di dottorato in scienze matematiche e fisiche

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