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The electron effective mass, m e, has been determined by magnetophotoluminescence in as-grown and hydrogenated Ga As 1− x N x samples for a wide range of nitrogen concentrations (from x< 0.01% to x= 1.78%). A modified k∙ p model, which takes into account hybridization effects between N cluster states and the conduction band edge, reproduces quantitatively the experimental m e values up to x⩽ 0.6%. Experimental and theoretical evidence is provided for the N complexes responsible for the nonmonotonic and initially puzzling compositional dependence of the electron mass.
American Physical Society
Publication date: 
27 Feb 2006

Francesco Masia, G Pettinari, A Polimeni, M Felici, A Miriametro, M Capizzi, A Lindsay, SB Healy, EP O’reilly, A Cristofoli, G Bais, M Piccin, S Rubini, F Martelli, Alfonso Franciosi, PJ Klar, K Volz, W Stolz

Biblio References: 
Volume: 73 Issue: 7 Pages: 073201
Physical Review B