Third-order phase transition and superconductivity in thin films |
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Authors: | Christofer Cronström Milan Noga |
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Institution: | (1) Division of Theoretical Physics, Physics Department, University of Helsinki, P.O. Box 9, FIN-00014, Finland;(2) Department of Theoretical Physics, Comenius University Mlynská Dolina, 842 48 Bratislava, Slovak Republic |
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Abstract: | We have found a new mean field solution in the BCS theory of superconductivity. This unconventional solution indicates the
existence of superconducting phase transitions of third order in thin films, or in bulk matter with a layered structure. The
critical temperature increases with decreasing thickness of the layer, and does not exhibit the isotope effect. The electronic
specific heat is a continuous function of temperature with a discontinuity in its derivative. |
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Keywords: | 74 10 +v 74 20 Fg 74 70 Jm 74 75 +t |
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