Renormalization-group approach to layered superconductors

C. Timm

doi:10.1103/PhysRevB.52.9751

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Renormalization-group approach to layered superconductors

C. Timm

DOI 10.1103/PhysRevB.52.9751 · Physical Review B

T1

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Abstract

A renormalization-group theory for a system consisting of coupled superconducting layers as a model for typical high-temperature superconductors is developed. In a first step the electromagnetic interaction over infinitely many layers is taken into account, but the Josephson coupling is neglected. In this case the corrections to two-dimensional behavior due to the presence of the other layers are very small. Next, renormalization-group equations for a layered system with very strong Josephson coupling are derived, taking into account only the smallest possible Josephson vortex loops. The applicability of these two limiting cases to typical high-temperature superconductors is discussed. Finally, it is argued that the original renormalization-group approach by Kosterlitz is not applicable to a layered system with intermediate Josephson coupling.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La3Ni2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown