Functional Mn-Mg-k cation complexes in GaN featured by Raman spectroscopy

Autor(es)

Devillers, T. ^[1] ; Leite, D. M. G. ^{[2, 3]} ; Dias da Silva, J. H. ^[3] ; Bonanni, A. ^[1]

Afiliação do(s) autor(es)

^[1] Johannes Kepler Univ Linz, Inst Halbleiter & Festkorperphys, A-4040 Linz - Austria

^[2] Univ Fed Itajuba, Inst Fis & Quim, BR-37500903 Itajuba, MG - Brazil

^[3] Sao Paulo State Univ, Dept Phys, Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Physics Letters; v. 103, n. 21 NOV 18 2013.
• Citações Web of Science: 3

Resumo

The evolution of the optical branch in the Raman spectra of (Ga, Mn)N:Mg epitaxial layers as a function of the Mn and Mg concentrations, reveals the interplay between the two dopants. We demonstrate that the various Mn-Mg-induced vibrational modes can be understood in the picture of functional Mn-Mgk complexes formed when substitutional Mn cations are bound to k substitutional Mg through nitrogen atoms, the number of ligands k being driven by the ratio between the Mg and the Mn concentrations. (C) 2013 Author(s). (AU)

• Processo FAPESP: 12/21147-7 - Crescimento de filmes e nanofios de GaN usando epitaxia por Magnetron Sputtering (MSE)
• Beneficiário: Jose Humberto Dias da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 06/05627-8 - Otimizacao estrutural, optica e magnetica de filmes de ga(1-x)mn(x)n depositados por sputtering reativo.
• Beneficiário: Douglas Marcel Gonçalves Leite
• Modalidade de apoio: Bolsas no Brasil - Doutorado