Resonance Raman spectroscopy of Ga1−xAlxAs mediated via compositional variation |
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| Authors: | D.J Lockwood Z.R Wasilewski |
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| Affiliation: | Institute for Microstructural Sciences, National Research Council, 1200 Montreal Road, Ottawa, Ont., Canada K1A 0R6 |
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| Abstract: | A specially prepared Ga1−xAlxAs sample with a laterally graded alloy composition has allowed a novel investigation of resonance Raman scattering from the optical phonons. Instead of varying the exciting light energy, the resonance is probed by changing the alloy composition at fixed incident energy. Both incoming and outgoing resonances are observed at the direct gap of the alloy, free of the usual overwhelming photoluminescence background. |
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| Keywords: | 78.30.Fs 71.20.Nr 63.50.+x |
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