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Type: Artigo de periódico
Title: Enhanced magneto-optical oscillations from two-dimensional hole-gases in the presence of Mn ions
Author: Gazoto, AL
Brasil, MJSP
Iikawa, F
Brum, JA
Ribeiro, E
Danilov, YA
Vikhrova, OV
Zvonkov, BN
Abstract: We investigated the effects of nearby Mn ions on the optical properties of two-dimensional hole-gases confined in InGaAs/GaAs quantum wells. We observed energy oscillations on both the averaged emission and the spin-splitting energies, whereas the first one presents maxima at all integer filling factors, and the second one, solely at odd-filling factors. The strength of the oscillations clearly increases with the Mn concentration. Furthermore, considering the relatively low-mobility of our structures, the oscillations are surprisingly strong and robust, persisting up to relatively high temperatures and excitation intensities. (C) 2011 American Institute of Physics. [doi:10.1063/1.3601477]
Subject: diamagnetic materials
doping profiles
gallium arsenide
III-V semiconductors
indium compounds
magnetic impurities
magneto-optical effects
semiconductor doping
semiconductor quantum wells
semimagnetic semiconductors
two-dimensional hole gas
Country: EUA
Editor: Amer Inst Physics
Citation: Applied Physics Letters. Amer Inst Physics, v. 98, n. 25, 2011.
Rights: aberto
Identifier DOI: 10.1063/1.3601477
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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