The electron effective mass, me, has been determined by magneto-photoluminescence in as-grown and hydrogenated GaAs1-xNx 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 me values up to x ? 0.6%. Experimental and theoretical evidence is provided of the N complexes responsible for the non-monotonic and initially puzzling compositional dependence of the electron mass.
Interaction between conduction band edge and nitrogen states probed by carrier effective mass measurements in GaAs1-xNx / Masia, F., Pettinari, G., Polimeni, A., Felici, M., Miriametro, A., Capizzi, M., Lindsay, A., Healy, S.B., O’Reilly, E.P., Cristofoli, A., Bais, G., Piccin, M., Rubini, S., Martelli, F., Franciosi, A., Klar, P.J., Volz, K., Stolz, W.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1550-235X. - STAMPA. - 73:(2006), pp. 073201-1-073201-4. [10.1103/PhysRevB.73.073201]
Interaction between conduction band edge and nitrogen states probed by carrier effective mass measurements in GaAs1-xNx
MASIA, Francesco;PETTINARI, GIORGIO;POLIMENI, Antonio;FELICI, Marco;MIRIAMETRO, Antonio;CAPIZZI, Mario;
2006
Abstract
The electron effective mass, me, has been determined by magneto-photoluminescence in as-grown and hydrogenated GaAs1-xNx 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 me values up to x ? 0.6%. Experimental and theoretical evidence is provided of the N complexes responsible for the non-monotonic and initially puzzling compositional dependence of the electron mass.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
