Penetration of a magnetic field in a very strong coupling superconductor

J. Blezius; R. Akis; F. Marsiglio; J. P. Carbotte

doi:10.1103/PhysRevB.38.179

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Penetration of a magnetic field in a very strong coupling superconductor

J. Blezius, R. Akis, F. Marsiglio, J. P. Carbotte

DOI 10.1103/PhysRevB.38.179 · Physical Review B

T1

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Abstract

We have calculated the absolute value and temperature dependence of the London penetration depth for several values of the strong-coupling index Tcωln and find large characteristic differences between the weak coupling Tcωln∼0, conventional strong coupling Tcωln≲0.25, and very strong coupling Tcωln∼1 regimes. Our results do not depend sensitively on the value of Coulomb pseudopotential, nor on the shape of the electron-boson exchange spectral density, but depend mainly on the characteristic boson energy ωln.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	96	Pressure not reported	unknown