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  • Electron states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds)  (3)
  • Electrons states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds)  (1)
  • superradiance and superfluorescence  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Optical study on ultrathin InAs/InP single quantum wells (1995)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 17 (1995), S. 1367-1370 
    Details
    ISSN: 0392-6737
    Keywords: Electron states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds) ; Optical properties of thin films surfaces and layer structures (superlattices, heterojunctions and multilayers) ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Our interest is centred on the very thin layers consisting of only one or a few monolayers of InAs. The optical transition energies, measured by photoluminescence spectroscopy, are compared with theoretical calculations obtained in envelope function approximation and through an empirical tight-binding method. This comparison yields values for the not well-known valence band offset at the InAs/InP interface, and the luminescence lines observed at different energies could be assigned to layers between one and 13 monolayers thick.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457211
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Binding energies and oscillator strengths of excitons in shallow quantum wells (1995)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 17 (1995), S. 1505-1508 
    Details
    ISSN: 0392-6737
    Keywords: Excitons and related phenomena (including electron-hole drops) ; Electron states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds) ; III-V and II-VI inorganics ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary A model for calculating exciton binding energies in quantum wells (QWs) is presented, which can be applied to situations in which one of the two band discontinuities is large, while the second one can be arbitrary (positive, negative, or zero). The model is applied to ZnSe/ZnSSe and InGaAs/GaAs QWs., The crossover between strong-and weak-confinement, regimes for excitons in narrow QWs is studied within a simplified model with two one-parameter, variational wave functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457234
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Polaritons in superlattices and in microcavities (1995)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 17 (1995), S. 1211-1218 
    Details
    ISSN: 0392-6737
    Keywords: Polaritons (including photon-phonon and photon-magnon interactions) ; Electrons states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds) ; III–V and II–VI inorganics ; Excitons and related phenomena (including electron-hole drops) ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary A description of polariton effects on excitons in multiple quantum wells (MQWs), superlattices (SLs), and semiconductor microvavities is presented. The non-local semi-classical theory in a transfer matrix formulation is adopted. The radiative width in MQWs atk=0 increases first with the number of wellsN, then goes to zero asN→∞, where stationary SL polaritons are recovered. The crossover from weak- to strong-coupling regimes for QW excitons in microcavities is described. The complex energies of the mixed exciton-radiation modes are shown to be measurable by time-resolved transmission experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457192
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Theory of exciton-polariton effects for a double quantum well in a microcavity (1995)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 17 (1995), S. 1651-1656 
    Details
    ISSN: 0392-6737
    Keywords: Excitons and related phenomena (including electron-hole drops) ; Polaritons (including photon-phonon and photon-magnon interactions) ; III–V semiconductors ; Cooperative phenomena ; superradiance and superfluorescence ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We study excitons in double quantum wells (DQWs) embedded in a semiconductor microcavity (MC) by means of semi-classical theory, which yields analytic results in weak- and strong-coupling regimes. We show how to obtain subpicosecond radiative lifetime for the excitons. A model for disorder is investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457258
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Light emission from quantum well excitons in semiconductor microcavities (1995)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 17 (1995), S. 1713-1716 
    Details
    ISSN: 0392-6737
    Keywords: Polaritons (including photon-phonon and photon-magnon interactions) ; Electron states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds) ; III–V and II–VI inorganics ; Excitons and related phenomena (including electron-hole drops) ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary A quantum-mechanical model for quantum well polaritons in semiconductor microcavities is presented. The real and imaginary parts of the polariton dispersion are obtained. They represent, respectively, the position and the linewidth of the luminescence peaks observed in typical experiments. The model includes the features of the distributed Bragg reflectors which constitute the cavity mirrors, and has the advantage of describing the weak-coupling as well as the strong-coupling regimes characteristic of this kind of systems. Furthermore, in the limit where no cavity is present, the well-known result for quantum well polaritons is recovered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457268
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    Paper (German National Licenses)
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