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|Type:||Artigo de periódico|
|Title:||Production and optical properties of steady-state photoinjected plasmas in quantum wires|
|Abstract:||We describe the production and the optical properties of the non-equilibrium photoinjected plasma in semiconductor quantum wires under continuous UV-light illumination. The wavenumber-dependent dynamic dielectric function of this system is derived and the Raman scattering cross-section calculated. From the latter we identify the contributions from different types of elementary excitations. They consist of, besides the single-particle excitations, two types of collective oscillations: an upper one, consisting of an intrasubband-like plasmon and a lower one, identified as an acoustic-like plasmon. The dependence of both on the non-equilibrium (dissipative) macroscopic state of the system is evidenced and discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.|
|Editor:||Pergamon-elsevier Science Ltd|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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