Proximity effect in superconducting layered structures

J. Z. Wu; X. X. Yao; C. S. Ting; W. K. Chu

doi:10.1103/PhysRevB.46.14059

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Proximity effect in superconducting layered structures

J. Z. Wu, X. X. Yao, C. S. Ting, W. K. Chu

DOI 10.1103/PhysRevB.46.14059 · Physical Review B

T1

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Abstract

A general formalism for discussing the superconducting proximity effect and the charge-carrier transfer effect in an inhomogeneous layered structure has been obtained from the Gor’kov equation. Two practical systems, which are finite superconductor/nonsuperconductor multilayer and superlattice, are considered. The physical properties such as the transition temperature, the coherence length, the proximity effect, and the charge-carrier transfer effect have been discussed. When compared with experiment, our calculations show that the depression of the transition temperature in the c-oriented Y-Ba-Cu-O/Pr-Ba-Cu-O superlattices is dominantly induced by the proximity effect.

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
DyBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
GdBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown