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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 18 (1996), S. 1449-1454 
    ISSN: 0392-6737
    Keywords: Proximity effects, weak links, tunneling phenomena, and Josephson effects ; Phenomenological theories (two-fluid Ginzburg-Landau, etc.) ; BCS theory and its development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary An analytic relationship between the values of the applied voltages which produce a maximum in the differential conductance and the energy gap is derived for BCS isotropic superconductors. The different methods of deduction of the temperature dependence of the gap in high-T c superconductors are analysed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 7 (1986), S. 1-21 
    ISSN: 0392-6737
    Keywords: General properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Utilizzando il metodo della trasformazione bosonica le proprietà elettromagnetiche di un film superconducente ferromagnetico sono state studiate. Il campo magnetico, il camp di induzione magnetica e la magnetizzazione sono stati calcolati analiticamente nel limite di London. In particolare, abbiamo studiato la dipendenza dei vari campi dal parametro fenomenologico μ, dalla temperatura e dallo spessore del film e la dipendenza dit s , temperatura critica al di sotto della quale appare la magnetizzazione spontanea, dal parametro μ e dallo spessore del film. Infine le proprietà magnetiche del film sono analizzate in approssimazione lineare e non lineare in funzione della temperatura e dello spessore.
    Abstract: Резюме Исследуются электромагнитные свойства ферромагнитной сверхпро водящей пленки с помощъю метода бозонного нреобразования. В пределе Лондона аналитически вычисляются магнитное поле, индуцированное поле и намагниченность. В частности, рассматривается зависимость вышеуказанных полей от феноменологического параметра μ, от температуры и от толщины пленки, а также зависимостьt s критической температуры, ниже которой возникает спонтанная намагниченность, от параметра μ и толщины пленки. В заключение, анализируются свойства пленки в зависимости от температуры и толщины в линейном и нелинейном приближениях.
    Notes: Summary By using the boson transformation method, the electromagnetic properties of a ferromagnetic superconducting film have been studied. The magnetic field, the induction field and the magnetization have been calculated analytically in the London limit. Particularly, we have studied the dependence of the various fields on the phenomenological parameter μ, on the temperature and on the film thickness and the dependence oft s , a critical temperature below which a spontaneous magnetization appears, on the parameter μ and on the film thickness. Finally, the magnetic properties of the film are analysed in the linear and nonlinear approximation as functions of temperature and thickness.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 15 (1993), S. 299-305 
    ISSN: 0392-6737
    Keywords: Heavy-fermion superconductors ; Superconductivity. Theory ; BCS theory ; applications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Using the Green's function method, the superconducting gap equation in the Anderson model with nearest-enighbour attraction between correlated electrons is obtained. Thes- andp-wave solutions of this equation have been analysed for different choices of the parameters of the model.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 11 (1989), S. 1709-1731 
    ISSN: 0392-6737
    Keywords: General theories and computational techniques ; Electronic density of states determinations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Un metodo diagrammatico è stato introdotto per studiare il modello di Anderson. Applicando questa tecnica al problema del chemisorbimento, è stata calcolata la densità degli stati elettronici localizzati a temperatura finita. È inoltre riportato un confronto con risultati ottenuti aT=0 nel limite simmetrico.
    Abstract: Резуме Вводится диаграммный метод для рассмотрения модели Андерсона. Предложенная техника применяется для исследоваия явлений хемосорбции. При конечных температурах вычисляется плотность состояний электронов адатома. Проводится сравнение с результатами, полученными в симметричном пределе приT=0.
    Notes: Summary A diagram method to treat the Anderson model has been introduced. By applying this technique to the study of chemisorption phenomena, the density of states of adatom electrons has been calculated at finite temperature. Comparison with the results obtained in the symmetric limit atT=0 is given.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 185-189 (1991), S. 1899-1900 
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 235-240 (1994), S. 2171-2172 
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 235-240 (1994), S. 2175-2176 
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica B: Physics of Condensed Matter 160 (1990), S. 304-312 
    ISSN: 0921-4526
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica B: Physics of Condensed Matter 194-196 (1994), S. 1195-1196 
    ISSN: 0921-4526
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica B+C 145 (1987), S. 342-348 
    ISSN: 0378-4363
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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