Superconducting Pairing Symmetry and Josephson Tunneling

J. H. Xu; J. L. Shen; J. H. Miller, Jr.; C. S. Ting

doi:10.1103/PhysRevLett.73.2492

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Superconducting Pairing Symmetry and Josephson Tunneling

J. H. Xu, J. L. Shen, J. H. Miller, Jr., C. S. Ting

DOI 10.1103/PhysRevLett.73.2492 · Physical Review Letters

T1

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Abstract

We study the relationship between the symmetry of the pairing state and the temperature-dependent Josephson critical current Jc(T) by generalizing the Ambegaokar-Baratoff theory to include tunneling between superconductors with various pairing states. We find that several apparently contradictory experimental results, including Josephson tunneling along the c direction in YBCO/Pb junctions and phase shift measurements in YBCO/Pb dc SQUIDs, can be consistently explained by assuming that the pairing symmetry of YBCO is s+id with a dominant d-wave component.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown