Abstract
In the tunnel limit, the current-phase relation of Josephson junctions can be expanded as I (ø) = I 1 sin ø +I 2 sin 2ø. Standard BCS theory predicts that I 1 R N ~ Δ/e and I 2/I1 ~ D, where R N is the resistance of the junction in the normal state, Δ is the superconducting gap, and D ≪ 1 is the junction transparency. In the cuprates, the experimental value of I 1 R N (I 2/I 1) is much smaller (larger) than the BCS prediction. We argue that both peculiarities of the cuprates can be explained by postulating quantum fluctuations of the pairing symmetry.
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© 2003 Springer Science+Business Media Dordrecht
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Hlubina, R. (2003). Josephson Effect In The Cuprates: Microscopic Implications. In: Hewson, A.C., Zlatić, V. (eds) Concepts in Electron Correlation. NATO Science Series, vol 110. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0213-4_2
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DOI: https://doi.org/10.1007/978-94-010-0213-4_2
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-1419-2
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