Vacuum tunneling and josephson effect in
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U. Poppe
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Article
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1985
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Elsevier Science
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Vacuum tunneling experiments as well as Josephson current measurements on heavy Fermion superconductors have been performed. In a point contact between the ordinary singlet superconductor A1 and CeCu2Si 2 a Josephson current could be observed. The value of the critical current I c was between 15 and