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Type: Artigo de periódico
Title: Carrier spin polarization near the Fermi level in n-modulation doped AlGaAs/InGaAs/GaAs quantum well
Author: Triques, ALC
Iikawa, F
Brum, JA
Maialle, MZ
Pereira, RG
Borghs, G
Abstract: We studied the carrier-spin polarization in an n-type modulation-doped single quantum well. The sample shows a high electron concentration and the second electron subband is marginally occupied. Photoluminescence and photoluminescence excitation were performed in the continuous-wave regime. The results reveal a polarization profile determined by the hole relaxation. A higher degree of polarization was observed for the luminescence related to the recombination of electrons in the second conduction subband. This suggests that the photo-created electrons localized close to the Fermi level maintain their polarization. (C) 1999 Academic Press.
Subject: semiconductor
quantum well
spin polarization
Country: Inglaterra
Editor: Academic Press Ltd
Citation: Superlattices And Microstructures. Academic Press Ltd, v. 25, n. 3, n. 551, n. 554, 1999.
Rights: fechado
Identifier DOI: 10.1006/spmi.1996.0236
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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