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arXiv · 1311.3097

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

Thibaut Devillers·Douglas Marcel Gonçalves Leite·José Humberto Dias da Silva·Alberta Bonanni
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Abstract

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--Mg$_k$ 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.

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Thibaut Devillers, Douglas Marcel Gonçalves Leite, José Humberto Dias da Silva, Alberta Bonanni. 2013-11-13. Functional Mn--Mg$_k$ cation complexes in GaN featured by Raman spectroscopy. https://doi.org/10.1063/1.4833024

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