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Type: Artigo de periódico
Title: Determination of spin polarization in InAs/GaAs self-assembled quantum dots
Author: Hernandez, FGG
Alegre, TPM
Medeiros-Ribeiro, G
Abstract: The spin polarization of electrons trapped in InAs self-assembled quantum dot ensembles is investigated. A statistical approach for the population of the spin levels allows one to infer the spin polarization from the measured values of the addition energies. From the magnetocapacitance spectroscopy data, the authors found a fully polarized ensemble of electronic spins above 10 T when B parallel to[001] and at 2.8 K. Finally, by including the g-tensor anisotropy, the angular dependence of the spin polarization with the magnetic field B orientation and strength could be determined. (C) 2008 American Institute of Physics.
Country: EUA
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.2905809
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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