Publicação: Functional Mn-Mg-k cation complexes in GaN featured by Raman spectroscopy
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2013-11-18
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American Institute of Physics (AIP)
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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).
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Applied Physics Letters. Melville: Amer Inst Physics, v. 103, n. 21, 4 p., 2013.
