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Thermodynamics of Superconducting Alloys with Localized States in the Energy Gap
Author(s) -
Schossmann M.,
Schachinger E.
Publication year - 1983
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221200232
Subject(s) - superconductivity , impurity , condensed matter physics , alloy , thermodynamics , paramagnetism , specific heat , position (finance) , function (biology) , materials science , physics , quantum mechanics , metallurgy , finance , evolutionary biology , economics , biology
Abstract A general formula for the energy difference between superconducting and normal states of an alloy with paramagnetic impurities is developed on the basis of the Shiba‐Rusinov theory. The result is used to calculate the thermodynamics of the alloys In ‐Mn, In ‐Cr, and Pb ‐Mn. It is shown that the deviation function is particularly sensitive on the position and number of localized states for all possible impurity concentrations. Finally, a comparison of theoretically calculated specific heat values for In ‐Mn with experimental results demonstrates a satisfactory agreement.