Density of states of a layered S/N d-wave superconductor

W. A. Atkinson; J. P. Carbotte

doi:10.1103/PhysRevB.51.1161

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Density of states of a layered S/N d-wave superconductor

W. A. Atkinson, J. P. Carbotte

DOI 10.1103/PhysRevB.51.1161 · Physical Review B

T1

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Abstract

We calculate the density of states of a layered superconductor in which there are two layers per unit cell. One of the layers contains a d-wave pairing interaction while the other is a normal metal. The goal of this article is to understand how the d-wave behavior of the system is modified by the coupling between the layer types. This coupling takes the form of coherent, single-particle tunneling along the c axis. We find that there are two physically different limits of behavior, which depend on the relative locations of the Fermi surfaces of the two layer types. We also discuss the interference between the interlayer coupling and pairing interaction and we find that this interference leads to features in the density of states.

Source-reported materials — not catalogue approval

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