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Please use this identifier to cite or link to this item: http://hdl.handle.net/2108/1214

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
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