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Type: Artigo de periódico
Title: High energy sideband on the magnetic polaron related luminescence in EuTe
Author: Heredia, E
Motisuke, P
Rappl, PHD
Brasil, MJSP
Iikawa, F
Abstract: We investigated the near band gap luminescence of EuTe thin films grown by molecular beam epitaxy, using excitation intensities up to 2 x 10(5) W/cm(2). Besides the previously reported high energy emissions MX1 and MX2, we observed an additional emission band at higher energies. This higher-energy band is only detected when high excitation intensities, over 2 kW/cm(2), are used. With increasing externally applied magnetic field, this additional emission band shifts to lower energies at a rate even higher than the MX1. The two bands, however, have different temperature dependences and decay times, suggesting that distinct electronic states are involved in their emission. (C) 2012 American Institute of Physics. []
Country: EUA
Editor: Amer Inst Physics
Citation: Applied Physics Letters. Amer Inst Physics, v. 101, n. 9, 2012.
Rights: aberto
Identifier DOI: 10.1063/1.4748981
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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