Energy gap in layered superconductors

L. N. Bulaevskii; M. V. Zyskin

doi:10.1103/PhysRevB.42.10230

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Energy gap in layered superconductors

L. N. Bulaevskii, M. V. Zyskin

DOI 10.1103/PhysRevB.42.10230 · Physical Review B

T1

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Abstract

The anisotropy of the gap in layered compounds is studied in the framework of the BCS model, taking into account the interlayer and different intralayer couplings in the system. The compounds with alternating normal (N) and superconducting (S) layers are studied in detail, the N layers being assumed to have zero pairing intralayer interaction. In S-N systems with Josephson coupling of layers, there are two quite different gaps and also different temperature scales of the superconducting properties of the S and N layers. The results are used to discuss the behavior of high-Tc superconductors and possible artificial superlattices based on these compounds.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Tl2Ca2Ba2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown