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Träfflista för sökning "WFRF:(Guziewicz E.) srt2:(2002-2004)"

Sökning: WFRF:(Guziewicz E.) > (2002-2004)

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1.
  • Godlewski, M, et al. (författare)
  • Influence of structural properties and of growth conditions on exciton properties in ZnCdSe/ZnSe quantum well structures
  • 2002
  • Ingår i: Materials Science Forum, Vols. 389-393. ; , s. 63-66
  • Konferensbidrag (refereegranskat)abstract
    • Structural and optical properties of relaxed and pseudomorphic ZnCdSe/ZnSe quantum well heterostructures are described. Structural quality and strain conditions of the films are linked with their light emission properties. From the temperature dependence of photoluminescence (PL) spectra we estimate exciton coupling constants to acoustic phonons in pseudomorphic and relaxed structures. The coupling is noticeably weaker in strain-relaxed structures with strong localization effects. PL kinetic studies confirm strong localization of excitons in strain-relaxed structures.
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2.
  • Joyce, J.J., et al. (författare)
  • Photoemission and the electronic structure of PuGaCo$_5$
  • 2003
  • Ingår i: Physical Review Letters. ; 91, s. 176401-
  • Tidskriftsartikel (refereegranskat)abstract
    • The electronic structure of the first Pu-based superconductor PuCoGa5 is explored using photoelectron spectroscopy and a novel theoretical scheme. Exceptional agreement between calculation and experiment defines a path forward for understanding the electronic structure aspects of Pu-based materials. The photoemission results show two separate regions of 5f electron spectral intensity, one at the Fermi energy and another centered 1.2 eV below the Fermi level. The results for PuCoGa5 clearly indicate 5f electron behavior on the threshold between localized and itinerant. Comparisons to delta phase Pu metal show a broader framework for understanding the fundamental electronic properties of the Pu 5f levels in general within two configurations, one localized and one itinerant.
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