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Growth and characterization of self-assembled InAs quantum dots doped with manganese

Grant number: 12/24286-8
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): May 01, 2013
Effective date (End): October 31, 2013
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Euclydes Marega Junior
Grantee:Fabio Aparecido Ferri
Supervisor abroad: Gregory J. Salamo
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Local de pesquisa : University of Arkansas, United States  
Associated to the scholarship:11/01137-4 - Growth of self-assembled InAs quantum dots doped with manganese, BP.PD

Abstract

This project addresses the implementation of a research period, at the Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, United States, through the program BEPE - Postdoctoral Fellow for a period of 06 months. The work aims to fill a gap and provide new contributions to the understanding of the properties in general, and the responsible mechanisms for the growth and formation of InAs quantum dots doped with magnetic impurities. This project perfectly complements the ongoing postdoctoral work, titled Growth of Self-Assembled InAs Quantum Dots Doped with Manganese (process 2011/01137-4 - FAPESP). The U.S. group has produced important works in the area, and has a large experience in the growth techniques to produce group III-V nanostructures doped with manganese, as well as the various experimental techniques to characterize them. The samples will be produced by the technique of molecular beam epitaxy (MBE), and will contain different concentrations of manganese, which will be mainly characterized by X-ray techniques, Raman spectroscopy, photoluminescence, and by scanning electron and atomic force microscopy measurements. At the atomic level, we intend to characterize the samples by transmission electron microscopy. Still, magnetic measurements will be obtained through experiments using a SQUID magnetometer. In this way, the magnetic properties of the samples will be analyzed as a function of composition, morphology, and structural patterns. (AU)