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  • AIP Publishing  (2)
  • 1985-1989  (2)
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  • AIP Publishing  (2)
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  • 1985-1989  (2)
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  • 1
    Online Resource
    Online Resource
    Formation of high T c superconducting films by organometallic chemical vapor deposition
    AIP Publishing ; 1988
    In:  Applied Physics Letters Vol. 52, No. 20 ( 1988-05-16), p. 1743-1745
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 52, No. 20 ( 1988-05-16), p. 1743-1745
    Abstract: The first growth of superconducting YBaCuO films by organometallic chemical vapor deposition is described. Metal β-diketonates were decomposed thermally on MgO substrates in an oxygen-rich atmosphere to produce amorphous brown films. Subsequent annealing in oxygen yielded dull gray films whose thickness corresponded to deposition rates of approximately 8 nm min−1. These films showed semiconductor-like behavior at higher temperatures, followed by a broad resistive transition from 80 to 36 K with the resistance becoming zero at ∼20 K. Analysis of x-ray data indicated the presence of the orthorhombic superconducting phase and various other metal oxides. Profilometer measurements yielded film thicknesses up to 950 nm, and scanning electron microscopy revealed faceted grains from 0.5 to 1.0 μm in size.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.99719
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 1988
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Nonlinear excitonic absorption in (Zn,Mn)Se superlattices and ZnSe films
    AIP Publishing ; 1986
    In:  Applied Physics Letters Vol. 48, No. 23 ( 1986-06-09), p. 1559-1561
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 48, No. 23 ( 1986-06-09), p. 1559-1561
    Abstract: Optical transmission studies have been performed on ZnSe thin films and two (Zn,Mn)Se superlattices (Eg≂2.8 eV) of varying barrier compositions and well widths grown by molecular beam epitaxy. The excitons in these samples ranged in character from three dimensional to quasi two dimensional. The spectra, obtained at 77 K as a function of incident light intensity, clearly show the saturation of the excitonic resonance. This is the first demonstration of nonlinear excitonic absorption in the (Zn,Mn)Se system. Mechanisms for the saturation are discussed with estimates for the relative contributions from Coulombic screening and phase space filling.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.96866
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 1986
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
    Location Call Number Limitation Availability
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    Online Resource
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